WALTHAM (CBS) – A garbage truck fire briefly shut down all lanes of Route 128 north in Waltham near the Weston line late Tuesday morning.

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The truck burned in the breakdown lane and traffic was backed up for miles. The ramp from Route 30 was also closed for more than a hour for the cleanup.

The garbage truck burned in a breakdown lane on Route 128 north. (WBZ-TV)

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It’s not clear yet what caused the fire or if there are any injuries.

All lanes of Route 128 north were shut down briefly.

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No other information is available at this point in the investigation.