An equipment problem near the Embarcadero BART station caused delays for nearly two hours for trains going into and out of San Francisco, a dispatcher said.

The problem was reported at about 10:20 a.m., causing delays of about 30 minutes at its peak, the dispatcher said.

Delays eventually dwindled to about 10 minutes and normal service had resumed by around noontime, she said.

The problem originated in one of BART's substations, but the dispatcher did not know what the exact nature of the problem was.