Fire under investigation in Tioga-Nicetown

PHILADELPHIA (WPVI) -- Fire crews in Philadelphia quickly got a house fire under control, but they still are on the hunt for answers on how it started.

It happened around 10:30 p.m. Thursday on the 3500 block of North 23rd Street in Tioga-Nicetown.

When firefighters arrived, there was heavy smoke coming from the third floor.

No injuries were reported.