SOUTH BRUNSWICK - The state attorney general's office is investigating a shooting in which a man was killed by police during a standoff in South Brunswick.

Authorities say a member of the Middlesex County Special Operations Response Team fatally shot 28-year-old Andrew Murnieks inside his South Brunswick home last night.

Police responded to the Hannah Drive home at around 6:30 p.m. last night and were confronted by Murnieks at the door. He threatened them with a knife.

Officers were told by Murnieks' mother that her son was schizophrenic and had not been taking his medication.

Authorities say efforts by a crisis negotiator to resolve the situation failed, and Murnieks was shot once in the chest after assaulting an officer. He was taken to Robert Wood Johnson University Hospital in New Brunswick where he was pronounced dead.

Family friends knew of Murnieks' condition, but were surprised about what happened. "Everybody has to be on medication for something when there's problems," says Diane Palumbo. "He's a good kid. He wasn't a bad kid. He was a nice kid. Breaks my heart."

Several nearby homes were evacuated while authorities tried to negotiate with Murnieks.