MONTGOMERY VILLAGE, Md. (CBSDC) - A two-alarm fire in Montgomery County is being investigated by authorities after it damaged two townhouses and displaced about 20 residents.

Flames broke out at a townhouse in the 18200 block of Kilrush Court about 10:40 p.m. Sunday. County fire department spokesperson Scott Graham says it took 65 firefighters about 25 minutes to bring it under control, adding that four units were damaged.

No injuries have been reported.