#’A-Train Ripper’ identified as homeless man from Brooklyn

Police on Sunday identified the “A-Train Ripper” as a 21-year-old homeless man from Brooklyn.

Rigoberto Lopez, who lives in a shelter in Boerum Hill, was charged with one count of first-degree murder, two counts of second-degree murder and two counts of second-degree attempted murder over a pair of deaths and two wounded victims, the NYPD said.

Lopez was arrested late Saturday — still covered in blood and with the alleged murder weapon — and charged after undergoing a psychiatric evaluation at Bellevue Hospital, police and law-enforcement sources told The Post.

Police said his bloody slashing spree began around 11:30 a.m. Friday, when police found a 67-year-old man who was stabbed on a southbound A train platform at the 181st Street station in Washington Heights in Manhattan.

Twelve hours later, a 57-year-old homeless man was found stabbed to death aboard an A train at the Mott Avenue station in Far Rockaway, Queens.

About two hours later, a 44-year-old homeless woman, identified by her family as Claudine Roberts, was found fatally slashed in a pool of blood on an A train at the 207th Street station in Inwood in Manhattan.

Around 1:30 a.m. Saturday, a 43-year-old man was randomly stabbed on a train at West 181st Street in Manhattan, police said.