SAN LEANDRO — A fire near BART’s San Leandro station on Tuesday morning damaged electrical cables and other BART infrastructure, interrupting service for hours between the Lake Merritt, Berryessa and Dublin stations.

The stoppage — which impacted the Blue, Green and Orange lines — began about 5:45 a.m. and remained in effect at 3:15 p.m., according to Alicia Trost, a BART spokesperson. Crews expected service to resume sometime between 3:30 p.m. and 5:30 p.m. on Tuesday, she said.

The cause of the fire, which started south of the station platform, was still under investigation Tuesday afternoon. Trost said the flames were on aerial tracks starting from right underneath the tracks, but not at ground level.

Other BART lines, including those through the Transbay Tube, were not impacted.

Authorities said the fire caused a power outage in the surrounding neighborhoods, but the number of impacted homes and businesses was not immediately available. As of 9 a.m., PG&E’s online outage map initially showed a loss of service for between 500 and 4,999 customers in the area around the San Leandro BART station. By 3:25 p.m., the outage map said only a handful of customers were affected.

Throughout the day, commuters were advised to seek alternate forms of transportation. BART officials said Alameda-Contra Costa Transit was providing help for commuters stranded between the Lake Merritt and Fremont stations while the Santa Clara Valley Transportation Authority was offering to aid travelers between the Milpitas and Berryessa stations.

The shutdown was the second major one for BART in less than two weeks.

On May 9, there was a systemwide closure that lasted between 4:25 a.m. and 9:20 a.m. that resulted from of a network connectivity issue that prevented controllers from seeing train locations.