Series of crashes stretches trauma unit's limits

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More than a dozen people were hospitalized on Thursday, July 24, after a vanload of suspected illegal immigrants rolled on I-10, tying up traffic and Tucson's only trauma unit. At least 18 people were injured in the series of accidents Thursday morning, nine of them seriously.

Department of Public Safety officials say a tire blowout may have cause the initial rollover on Thursday morning. Several people remain hospitalized, but their conditions are not known.