This article was updated at 11 p.m. on March 18 with information from the Essex County Prosecutor's Office.

SOUTH ORANGE, NJ - A fatal fire at a house on Warwick Avenue in South Orange on Sunday afternoon is under investigation, stated Acting Essex County Prosecutor Robert D. Laurino, South Orange Fire Chief Daniel Sullivan and South Orange Police Chief Kyle Kroll.

According to a press release from the Essex County Prosecutor's Office, at about 2:15 p.m., units from the South Orange Fire Department were dispatched to a report of a fire at a residence at 360 Warwick  Ave.

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Arriving firefighters observed an active fire at this location. When firefighters entered the structure, they located an unresponsive man on the first floor of the single family residence, according to the press release.

The man was removed from the house and was transported to Saint Barnabas Medical Center, where he was pronounced dead at 3:24 p.m., according to Chief Assistant Prosecutor Thomas S. Fennelly, of the Prosecutor's Homicide Unit.

The victim has been identified as Weyman W. Watson, age 61, the owner of the residence. No one else was injured as a result of the fire, stated the press release.

The fire was contained by about 5 p.m., and required mutual aid from fire departments in neighboring towns, according to firefighters at the scene.

According to Fennelly, this incident is being investigated by the Essex County Prosecutor's Office Crash and Fire Investigation Unit.

Anyone with information is asked to call the Prosecutor's Tips Line at (877) 847-7432.