BOSTON (CBS) — The MBTA encouraged riders to take the Commuter Rail instead of the T after a switch problem at Alewife station caused severe delays Thursday morning.

The problem was causing delays in both directions.

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Check: MBTA Service Alerts Page

There was heavy congestion on the platform at Davis Square station:

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At the Harvard Square stop:

And at Porter Square:

The MBTA said around 9:50 a.m. that service had returned to normal.

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