Anchorage Fire Department responded to an eastside duplex fire late Friday night.

AFD said they received a call at 11:39 p.m. reporting a two-story duplex was on fire on the 800 block of Pioneer Drive.

Within five minutes crews arrived on scene and found one of the two units heavily involved with fire venting out of the windows on all three sides, according to Nixle alert.

Fire crews began fighting the fire from the exterior until they were able to make it inside to search for possible victims and tackle the remaining flames.

One firefighter was sent to the hospital with minor injuries related to the fire but was sent home in good condition, officials say.

AFD said the fire was contained by 12:09 a.m. and kept several crews on site until 2:50 a.m. to conduct salvage and overhaul operations.

Red Cross was called to assist the occupant of the unit.

The other unit of the duplex was left undamaged, according to AFD.

The cause of the fire remains under investigations.

Video courtesy: Andrey Oleshko/@andreydyuha