Reno Fire and Police are investigating a fire on 2nd Street and Keystone that broke out early Friday morning.

Crews received calls of smoke in the area around 4:40 a.m. Friday. 

Officials tell us that a mattress caught fire after people were smoking on it. The mattress is heavily damaged and the two residents are being displaced.

The Red Cross is helping those people find other accommodations. 

No injuries were reported.