CORONA >> The FBI served a search warrant Thursday at a home connected to Syed Rizwan Farook, one of the shooters in the Dec. 2 terror attack in San Bernardino.

FBI officials confirmed they served a search warrant at the Corona home in the 1700 block of Forum Way. A records check shows Syed Rizwan Farook’s brother Syed Raheel Farook living at the address.

“Federal agents executed a search warrant at a residence in Corona (Thursday) morning to seek evidence in an ongoing investigation,” FBI spokeswoman Laura Eimiller said via email. “The affidavit in support of the warrant has been sealed by the court and we are, therefore, prohibited from commenting on the nature of the search.”

To serve a search warrant, authorities must have probable cause a crime was committed and items connected to the crime are likely to be found at the location.

• Photos: FBI search corona home of Syed Raheel Farook

No arrests were made at the time of the search, according to Eimiller.

Several government vehicles lined the narrow streets of the private community as agents and local law enforcement officials went in and out of the home of U.S. Navy veteran Syed Raheel Farook.

Neighbors said they began hearing movement in the neighborhood around 6 a.m. and saw agents carrying armloads of papers, manila envelopes and a computer tower from the home.

Residents also said they saw Syed Raheel Farook and his father, also named Syed Farook, outside the home speaking with agents soon after 6 a.m.

Initial media reports indicate that Farook’s father was being detained for safety concerns. Eimiller said via email that this was done to ensure the safety of the residents of the home.

“Residents are routinely removed for a brief period while a home is cleared as a safety precaution,” she wrote, adding that as soon as the investigation concluded, everyone was allowed back into the home or to leave.

The presence of law enforcement in the private community was disconcerting to some, but others saw it differently.

“In a way it’s kind of comforting to know the FBI is here,” said Jason Jones, who lives in the community. “To know that they are being diligent and making sure everything has been looked into.”

Jones said he’s seen the family before and after the Dec. 2 attack and said they seemed like nice people.

• Video: Federal agents serve a search warrant at the home of Syed Rizwan Farook’s brother

“The younger woman, the wife, she is a lovely person,” said Rachel Arajo of Tatiana Farook, wife of Syed Raheel Farook. “She visited and took care of my sister when she was sick.”

Arajo’s sister lives in the Corona community where the Farooks reside; Tatiana Farook was Arajo’s longtime hairdresser.

“When my sister was diagnosed with cancer last year, she and her husband were wonderful to her,” Arajo said. “They took her to the doctor and would bring her things. I don’t know about all the other things that happened, but I know they are very good people.”

Neighbor Stacy Mozer said Thursday that Syed Raheel Farook and his wife are ideal neighbors and very pleasant people.

Mozer says the family’s home was searched twice after the December terror attack and that authorities previously broke down the front door. Shards of wood and damage to the lock were still visible Thursday.

Syed Rizwan Farook and his wife, Tashfeen Malik, killed 14 people and wounded 22 more when they opened fire at the Inland Regional Center on Dec. 2. The two were killed later that day in a shootout with police.

The 14 people killed marked the deadliest terror attack on U.S. soil since Sept. 11, 2001. Syed Rizwan Farook’s family has said they had no inkling about the plot.

Syed Raheel Farook was in the Navy from 2003 to 2007, military records show. He was stationed aboard the aircraft carrier USS Enterprise and received the Global War on Terrorism Expeditionary Medal and the Global War on Terrorism Service Medal, among other awards.

The search warrant came a day after Apple CEO Tim Cook said the company would fight federal government efforts to help the FBI hack into an iPhone used by shooter Syed Rizwan Farook.

A federal magistrate ordered Apple to help the FBI get into the phone but Cook said doing so would mean building a “backdoor” that would bypass digital locks protecting consumer information on iPhones. He says the software would be too dangerous to create.

So far, the only person charged in connection with the Dec. 2 attack is Enrique Marquez, a friend and former neighbor of Syed Rizwan Farook’s. Marquez is charged with providing the assault rifles used in the massacre, making false statements about when he bought the weapons and conspiring with Syed Rizwan Farook on a pair of previously planned attacks that were never carried out.

Marquez also faces charges of marriage fraud and lying on immigration paperwork. The FBI said he acknowledged that he was paid $200 a month to marry the sister of Syed Raheel Farook’s wife, and he lied on immigration papers that he lived with her so she could stay in the U.S.

Marquez and his wife listed their address at the same Corona home that was searched by the FBI on Thursday.

The Associated Press contributed to this report.