A 91-year-old woman was choked and robbed at gunpoint inside the vestibule of her Brooklyn apartment building Wednesday afternoon, police said.

A man approached the woman from behind around 1 p.m., followed her into her apartment building and placed a chokehold on her, police said, according to News 12 Brooklyn. The man then showed a gun and began robbing the woman.

Her condition after the attack was unclear, but she was able to speak to reporters.

β€œI came back from the library at Grand Army Plaza and he followed me,” the woman told The New York Daily News. β€œHe took $170 and my ID.”

A 50-year-old man walked into the building and tried to intervene, but the thief pointed the gun at him and robbed the man.

Police said the suspect stole $370 before fleeing.