OWOSSO, Mich. (AP) — A dial-a-ride bus service in a Michigan county has been suspended after catalytic converters were stolen from vehicles.

A catalytic converter is part of a vehicle’s exhaust system. They’re sought by thieves because they contain valuable precious metals.

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The thefts occurred last weekend at buses operated by the Shiawassee Area Transportation Agency in Shiawassee County, 40 miles northeast of Lansing.

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“At this point, our transportation services are temporarily suspended. We are going week to week and will inform you regularly of any changes,” the agency said Monday.

For a fee, the buses take county residents to grocery stores, medical appointments, schools and more. People who are 60 or older can ride for free.

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