BOSTON (CBS) – Two manholes exploded near the Charles/MGH Red Line Station Tuesday afternoon.

Video from SkyEye showed flames and thick black smoke pouring out of a manhole on Cambridge Street under the Red Line tracks. One witness told WBZ-TV she heard three explosions and a manhole cover flew 30 feet up in the air.

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Eversource said the explosions were the result of an equipment failure.

Several roads were temporarily closed and the Red Line bypassed the Charles/MGH station.

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Firefighters spray foam into manhole on Cambridge Street (WBZ-TV)

Boston Fire said they received a call for smoke coming out of multiple manholes at about 3:15 p.m. When firefighters arrived the ground had already buckled around some of the manholes. Firefighters consulted with Eversource and applied a foam extinguishing agent.

Due to the coronavirus pandemic, traffic was greatly reduced in the area, and no injuries were reported.

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The explosions happened near Mass General Hospital, but operations were not impacted.