Mom's boyfriend arrested for toddler's death

Fort Worth police have arrested a man for the death of his girlfriend's 2-year-old son.

Adrian Langlais was unresponsive when he was rushed to Cook Children's Medical Center on March 18, which was his birthday. He died the next day due to blunt force trauma to the head, a medical examiner determined.

Christian Michael Tyrrell, 22, was taken into custody on Wednesday and charged with capital murder.

According to an arrest warrant affidavit, Tyrrell told investigators he had spanked Adrian and put him in time out in a playpen because he would not eat.

The boy's mother said she heard Tyrrell yelling at him, then there was silence and all his crying stopped. She later noticed bruises on his face and said his eyes kept rolling back.

The affidavit states Adrian vomited later that night and had trouble standing up. The next morning as Tyrrell was driving his mother to work, he barely moved in his car seat and only opened his eyes when she kissed him goodbye.

Tyrrell called 911 after the boy had a seizure and stopped breathing, the affidavit states.

Investigators allegedly found search terms like "how to tell if someone has went braindead" and "toddler can't walk or use right side after hitting head" on his cellphone.

Child Protective Services reportedly investigated the couple in December after getting a tip about bruises on the boy, but nothing came of it and the case was closed in February.

Tyrrell's bond has been set at $1 million.