WASHINGTON, Jan 29 (Reuters) - A Pennsylvania man was charged on Tuesday with 19 more federal hate crimes and firearms charges for the October massacre of 11 people at a Pittsburgh synagogue, the U.S. Justice Department said on Tuesday.

The new charges against Robert Bowers - who has pleaded not guilty to 44 earlier charges - cover obstructing free exercise of religious beliefs that led to death and injury, committing hate crimes that also resulted in death, and discharging a firearm.

Bowers could face the death penalty if convicted of carrying out the deadliest anti-Semitic attack in U.S. history.

28 PHOTOS Deadly shooting at Tree of Life Synagogue in Pittsburgh See Gallery Deadly shooting at Tree of Life Synagogue in Pittsburgh A SWAT team arrives at the Tree of Life Synagogue inPittsburgh, Pa. where a shooter opened fire injuring multiple people, Saturday, Oct. 27, 2018. (AP Photo/Gene J. Puskar) First responders arrive at the Tree of Life Synagogue in Pittsburgh, Pa.m, where a shooter opened fire Saturday, Oct. 27, 2018. (AP Photo/Gene J. Puskar) La presencia policial alrededor de una sinagoga en Pittsburgh donde un individuo efectuó disparos el 27 de octubre del 2018. (Pam Panchak/Pittsburgh Post-Gazette via AP) People gather on a corner near the Tree of Life Synagogue in Pittsburgh, Pa., where a shooter opened fire Saturday, Oct. 27, 2018, injuring multiple people. (AP Photo/Gene J. Puskar) First responders surround the Tree of Life Synagogue in Pittsburgh, Pa., where a shooter opened fire Saturday, Oct. 27, 2018, wounding three police officers and causing "multiple casualties" according to police. (AP Photo/Gene J. Puskar) First responders surround the Tree of Life Synagogue, rear center, where a shooter opened fire Saturday, Oct. 27, 2018, wounding three police officers and causing "multiple casualties" according to Police. (AP Photo/Gene J. Puskar) First responders surround the Tree of Life Synagogue where a shooter opened fire Saturday, Oct. 27, 2018, wounding three police officers and causing "multiple casualties" according to Police. (AP Photo/Gene J. Puskar) First responders surround the Tree of Life Synagogue, rear center, where a shooter opened fire Saturday, Oct. 27, 2018, wounding three police officers and causing "multiple casualties" according to Police. (AP Photo/Gene J. Puskar) First responders surround the Tree of Life Synagogue where a shooter opened fire Saturday, Oct. 27, 2018. (AP Photo/Gene J. Puskar) Polikce respond to an active shooter situation at the Tree of Life synagogue on Wildins Avenue in the Squirrel Hill neighborhood of Pittsburgh, Pa., on Saturday, October 27, 2018. (Pam Panchak/Pittsburgh Post-Gazette via AP) A man holds his head as he is escorted out of the Tree of Life Congregation by police following a shooting at the Pittsburg synagogue, Saturday, Oct. 27, 2018. (Alexandra Wimley/Pittsburgh Post-Gazette via AP) Law enforcement run with a person on a stretcher at the scene where multiple people were shot, Saturday, Oct. 27, 2018, at the Tree of Life Congregation in Pittsburgh's Squirrel Hill neighborhood. (Alexandra Wimley/Pittsburgh Post-Gazette via AP) Law enforcement officers secure the scene where multiple people were shot, Saturday, Oct. 27, 2018, at the Tree of Life Congregation in Pittsburgh's Squirrel Hill neighborhood. (Alexandra Wimley/Pittsburgh Post-Gazette via AP) PITTSBURGH, PA - OCTOBER 27: A former rabbi talks about his congregation near the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Residents talk to the media near the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Residents check their phones near the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police rapid response team members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) PITTSBURGH, PA - OCTOBER 27: Police members respond to the site of a mass shooting at the Tree of Life Synagogue in the Squirrel Hill neighborhood on October 27, 2018 in Pittsburgh, Pennsylvania. According to reports, at least 12 people were shot, 4 dead and three police officers hurt during the incident. The shooter surrendered to authorities and was taken into custody. (Photo by Jeff Swensen/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Bowers, 46, a Pittsburgh resident, was taken into custody after a shootout with police who responded after a gunman stormed Pittsburgh's Tree of Life synagogue during Saturday services on Oct. 27, and yelled, "All Jews must die."

He had made many anti-Semitic posts online, including one early on the day of the attack. In another, he slammed U.S. President Donald Trump for doing nothing to stop an "infestation" of the United States by Jews.

Federal authorities said Bowers entered the synagogue in the city's Squirrel Hill neighborhood, a heavily Jewish area, armed with multiple firearms, including three Glock .357 handguns and a Colt AR-15 rifle.

The superseding indictment that was returned by a federal grand jury brings to 63 the number of charges Bowers faces. (Reporting by Lisa Lambert in Washington and Peter Szekely in New York; editing by Scott Malone and Bill Berkrot)