OAKLAND — Several tents and other items were destroyed but no one was reported injured Wednesday morning when a fire erupted at a homeless encampment underneath BART tracks in West Oakland, authorities said.

It was the second fire at a homeless encampment in three days.

Wednesday’s fire started about 4:24 a.m. on the south side of Fifth Street between Market and Brush streets, an area that has a large homeless population.

Bright flames and dark smoke could be seen over a wide area, including nearby Interstate 880.

Firefighters were able to control the fire quickly. The cause of the fire is under investigation.

The fire caused an electrical outage in the area. BART service was not affected.

Monday’s fire happened about 5:20 a.m. near Fifth Avenue and Embarcadero. Flames from the fire were also visible to motorists on I-880. It took firefighters less than an hour to put out the blaze.

Officials said there had been homeless people living at the site several months prior, but they had moved out. Officials said the fire started in an area where there was a significant amount of trash.

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