Search on for girl, 15, seen being dragged off in Vallejo

Pearl Pinson, 15, of Vallejo, was last seen around 7 a.m. Wednesday May 25, 2016. Authorities were searching for her and the armed man seen pulling her away, who was identified as 19-year-old Fernando Castro of Vallejo. less Pearl Pinson, 15, of Vallejo, was last seen around 7 a.m. Wednesday May 25, 2016. Authorities were searching for her and the armed man seen pulling her away, who was identified as 19-year-old Fernando Castro of ... more Image 1 of / 3 Caption Close Search on for girl, 15, seen being dragged off in Vallejo 1 / 3 Back to Gallery

Investigators are searching for a 15-year-old girl last seen bleeding and screaming for help while being dragged away by an armed 19-year-old man in Vallejo Wednesday morning, authorities said.

Pearl Pinson had not been seen since around 7 a.m. She never arrived to school. She was last seen wearing a black and turquoise backpack, according to a statement from the Solano County Sheriff’s Office.

Several people near the Interstate 780 pedestrian over-crossing from Home Acres Avenue to Taylor Avenue in Vallejo called authorities to report gunshots were fired in the area.

One witness told investigators a girl later identified as Pinson was bleeding from her face and crying for help at the crossing, the sheriff’s office stated. A man, identified as 19 year-old Fernando Castro of Vallejo was pulling Pinson on the crossing, holding a gun in his hand, officials said.

The witness ran to get help and heard a shot in the background, deputies said. When investigators arrived they saw blood on the ground but did not find them in the area.

Pinson was wearing a gray sweater and black leggings. She has green hair. Castro was in a black hooded sweatshirt, and was possibly wearing reading-type glasses.

Authorities were working to determine if Pinson and Castor knew each other, said Deputy Christine Castillo, a Vallejo police spokeswoman.

Police did not know if Pinson was shot, or the extent of her injuries. It’s not known if Pinson and Castro left together, deputies said.

Anyone with information can call detectives at (707) 784-7061. To remain anonymous, call Crime Stoppers at (707) 644-7867.

Jenna Lyons is a San Francisco Chronicle staff writer. Email: jlyons@sfchronicle.com Twitter: JennaJourno