The Brooklyn maniac who brutally slashed four young girls with a meat cleaver is still clinging to life after undergoing emergency surgery — as sources revealed that he had been hospitalized for schizophrenia in the past.
Lun Chang Chen, 49, was shot once in the head and twice in the torso as he allegedly lunged at cops who rushed to the bloody scene inside the Bensonhurst home Sunday morning, police said.
Four children between the ages of 8 and 13 were found bloodied and slashed when police arrived — including a wounded11-year-old girl who locked herself in a room and called 911, NYPD Commissioner Jessica Tisch said at a briefing following the attacks…