Residents in 10 Discovery Bay homes were told to evacuate their homes Tuesday after police were called to tend to a distraught person in one of the residences, authorities said.
Police were called to Newport Drive around 4:55 p.m., said Contra Costa Sheriff's Office spokesman Jimmy Lee.
Deputies went to 10 homes and knocked on the doors, telling people to leave. It was not disclosed why the homes needed to be evacuated.
Additional details on the incident weren't available late Tuesday.
Rick Hurd and Daniel Jimenez cover breaking news.