Joshua Parker requested to see a doctor and be released from jail claiming he is in pain from the crash on the 17th.
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Police say Parker was driving drunk when he hit the trailer at Belmont and Barton in central Fresno.
Mina Serrano was killed. Her two-year-old son, Mason, was in the back seat and survived the crash.
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Parker is also facing charges of high speed, and driving with a suspended or revoked license.
He has a prior felony conviction back in 2008. Bail is set at more than $220,000.