Several people suffered minor injuries in a crash involving at least two vehicles on southbound Frederick Road at Watkins Pond Boulevard near King Farm in Rockville on Thursday morning, a county fire and rescue service spokesman said.
Fire and rescue responded to the call at 10:53 a.m.
"We're currently assessing and transporting four, possibly five patients. All appear to be non-life-threatening," said Capt. Oscar Garcia, a county fire and rescue spokesman.
The incident backed up traffic on southbound Frederick Road.