Mailman stabs co-worker inside NYC apartment: sources

A mailman went postal on his colleague, brutally knifing her in a Staten Island apartment on Wednesday, according to police sources. 

The postal worker attacked the 26-year-old woman with a pocket knife after arguing with her inside the Dongan Hills apartment shortly before 3 p.m., the sources said.

The mailman reportedly ran off after the attack, fleeing in a black BMW sedan while wearing a USPS jacket.

The duo were off-duty when the violence unfolded inside the woman’s fifth floor apartment near Dongan Hills Avenue and Richmond Road. 

Police were called to the scene when the woman told a neighbor to call 911, sources said. 

Cops discovered her in the lobby with multiple stab wounds across her chest, stomach, arm and thigh, along with a gruesome blood trail leading to her apartment. 

Medics rushed her to Staten Island University Hospital North, where she was listed in stable condition. 

She told cops her attacker works with her at a post office in lower Manhattan, sources said. 

The mailman has yet to be nabbed by police.

The Post reached out to USPS for a comment, but did not immediately hear back. 

Additional reporting by Tina Moore