Tulsa police said a man and woman are accused of "violently shaking" a 5-month-old infant.
Brandon Yingst and Chelcea Silcott have both been charged with child abuse by injury and child neglect, court records show.
According to court documents, between December 13 and 14, Yingst and Silcott were at a residence in the 4000 block of East King Street wrapping presents, drinking, and visiting with family.
On December 14, the infant was "shaken violently" which caused severe brain injuries, affidavits said.
An affidavit said at around 10 a.m. Silcott noticed the infant's left leg shaking.
Silcott woke up Yingst and told him she thought the victim was having a seizure, but Yingst disagreed, court docs said.
Court docs said the infant's leg continued to shake for another hour before stopping.
Silcott went to take a shower and after getting out, she saw the victim's left leg and arm shaking, the affidavit stated.
Police said the infant, Silcott noticed, had thrown up as well.
Silcott and Yingst agreed the child needed medical attention, but neither of them called for an ambulance, officials said.
It wasn't until 1:30 p.m. did Silcott and Yingst take the child to the hospital, court records said.
While at the hospital, the affidavit stated, doctors noticed the child's injuries, which were consistent with abusive head trauma.
Warrants were issued for Silcott and Yingst. Silcott was picked up on Thursday, jail records stated.
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