CAMBRIDGE (CBS) — A cyclist was struck and killed by a truck in Porter Square Wednesday morning.

Police said the fatal collision happened around 8:08 a.m. Wednesday in front of the Porter Square Dunkin Donuts.

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The scene of a crash in Porter Square that killed a cyclist Wednesday morning. (Photo courtesy Emily Flynn)

The scene of a crash in Porter Square that killed a cyclist Wednesday morning. (Photo courtesy Emily Flynn)

The cyclist, identified as 60-year-old Bernard Lavins of Lexington, was pronounced dead at the scene.

The driver of truck stayed at the scene, police said.

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Police investigate after a cyclist was hit and killed. (Nicole Jacobs/WBZ)

Police investigate after a cyclist was hit and killed. (Nicole Jacobs/WBZ)

Both ends of Massachusetts Avenue were blocked off near Porter Square after the crash.

Cambridge Public Schools said a small number of students witnessed the fatal crash.

Grief counselors were put in place at schools the students attend.

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The cause of the crash was not yet known. The Middlesex District Attorney’s office is investigating.