UPDATE: 4 transported in Attleboro apartment fire

ATTLEBORO, M.A. (WLNE) – Four people were transported to the hospital after a two-alarm fire broke out at an Attleboro apartment complex fire Friday evening.

Attleboro, Providence and Seekonk firefighters responded around four p.m. on Knight Avenue to a fire in a single third floor unit.

The four people were transported as a precaution and did not have any serious injuries.

Neighbors tell ABC 6 the incident started when a lit cigarette caught a mattress on fire.

It’s not clear how badly the apartment was damaged.

The cause is under investigation, though officials said it appears to be accidental.

Refresh this page for more details as they become available.

©WLNE-TV / ABC6 2018