SAN DIEGO — A trolley line that travels between Downtown San Diego and Santee was temporarily shut down Wednesday due to police investigating a suspicious device, according to authorities.

San Diego Metropolitan Transit System’s Green Line returned to normal service around 8:11 p.m. after service being halted for about an hour-and-a-half at 12th Avenue and Imperial Avenue in both directions, the public service transit provider tweeted.

No other details were released by authorities about the incident.

Check back for updates on this developing story.