PLEASANTON (CBS SF) — Authorities in the East Bay on Monday afternoon confirmed police activity led to the closure of two westbound lanes of I-580 in Pleasanton for 45 minutes.

CHP posted about the incident shortly after 1 p.m. Monday, saying that there was a severe traffic alert in connection with police activity on westbound I-580 west of Fallon Drive in Pleasanton. The right and center lanes were closed.

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The CHP Dublin area office directed media inquiries regarding the incident to the Pleasanton Police Department.

CHP confirmed that all lanes had reopened by about 1:47 p.m. and that drivers should expect residual delays.