Sergio Brown was taken into custody in Southern California on Tuesday in connection with the violent death of his mother, Myrtle Brown, last month.

The San Diego Police Department took the ex-NFL player into custody Tuesday while Brown was re-entering the United States from Mexico after a warrant for first-degree murder was issued, according to the Maywood Police Department. Brown, 35, is awaiting extradition to Maywood.

Myrtle Brown, 73, was found dead on Sept. 16 near a creek not far from her Maywood home. Sergio Brown had been missing since.

An autopsy found she had suffered several injuries from an assault and her death was ruled a homicide, according to the Cook County medical examiner’s office.

A hearing was held Wednesday morning for Sergio Brown in Maywood, but it was not clear if he was in attendance.

Myrtle Brown’s body was found near a small nature walk along a section of Silver Creek, which cuts behind her house. Tall grass and wildflowers line the creek, and a cluster of trees border her backyard.

Neighbors described Myrtle Brown as a sweet woman who was always helpful and friendly.

Days after his mom was found, a man who resembles Sergio Brown appeared in a 51-second video posted on social media. He calls the reports of his mother’s death “fake news” and alleges the Maywood police and FBI were setting him up.