DISCOVERY BAY -- A head-on collision between at least two vehicles on Highway 4 Wednesday morning left multiple people badly hurt, according to the California Highway Patrol.
At least one ambulance and one helicopter were called to the scene near Tracy Boulevard after the collision happened around 6:30 a.m., a dispatcher said.
The details of the crash were not immediately available, but the roadway had been cleared by about 8 a.m., the dispatcher said.
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Contact Sean Maher at925-943-8013. Follow him on Twitter at twitter.com/OneSeanMaher.