HOBOKEN -- Investigators are looking into the death of a 51-year-old man in Hoboken, who suffered a single gunshot wound to the chest.

The Hudson County Prosecutor's office released a statement late Monday morning saying police responded to a 911 call of a "cardiac arrest," on the 700 block of Grand Street that came in about 1 a.m.



"The male was pronounced dead at the scene shortly after 1:20 a.m.," the statement said. "The investigation is ongoing and at this early stage of the investigation, investigators have not ruled out the possibility that the gunshot wound was self-inflicted."

Police closed the block to traffic until mid-day on Monday, when the door of the three-story house where the shooting occurred was padlocked shut, with a do-not-enter sign posted by the Homicide Unit of the prosecutor's office.

Steve Strunsky may be reached at sstrunsky@njadvancemedia.com. Follow him on Twitter @SteveStrunsky. Find NJ.com on Facebook.