Updated

Former NFL player Sergio Brown was arrested by law enforcement on Tuesday in connection with the death of his mother, whose body was found near a creek behind her home in Illinois last month, police said Wednesday. 

Brown, 35, was taken into custody after trying to re-enter the United States into California from Mexico by the San Diego Police Department Threat Management Unit and several other agencies, including local and federal, after a warrant for his arrest was issued in Illinois. 

Sergio Brown celebrates

Sergio Brown of the Colts reacts after breaking up a pass intended for Jermaine Gresham of the Cincinnati Bengals on Oct. 19, 2014, at Lucas Oil Stadium in Indianapolis. (Kirk Irwin/Getty Images)

He was arrested on a first degree murder charge in connection with the homicide of his mother, 73-year-old Myrtle Brown. He is currently awaiting extradition to Illinois. 

SERGIO BROWN APPEARS ON VIDEO PARTYING IN MEXICO WEEKS AFTER MOTHER'S MYSTERIOUS DEATH

Myrtle Brown was found dead near a creek behind her home in Maywood, Illinois, on Sept. 16, an area just 12 miles west of Chicago. Family members had reported Brown and his mother missing. 

Police were still attempting to locate Brown late last month when he appeared in videos on social media discussing the reports about his mother’s death. 

"Fake news. Fake news. Fake news," Brown said in the video in which he tagged ESPN. "It has to be the FBI that came into my house on Bob Marley’s death day with the 511 haze and gas unwarranted. They kidnapped me twice from home – the Maywood Police Department. It had to be the FBI or the Maywood police."

Sergio Brown with the Colts

Sergio Brown of the Colts on the sideline during the Jacksonville Jaguars game at Lucas Oil Stadium on Sept. 23, 2012, in Indianapolis. (Michael Hickey/Getty Images)

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"I thought my f---ing mama was on vacation in Sinaloa. That’s f---ing fake news. Get the f--- out of my goddamn face. She’s retired, and you want to come to me? The FBI had to do it. They have some power to do some s--- like that. What the f--- is going on? That’s fake news."

He posted a second video the following day.

Maywood police spokesperson Carmen Rivera told The Associated Press at the time that they were aware of the videos and investigating. 

As late as last week, it was reported the former NFL defensive back was seen in a video partying in Mexico. 

The Cook County Medical Examiner’s Office ruled Myrtle Brown's death a homicide, saying she was injured during an assault.

Sergio Brown for the Bills

Sergio Brown of the Buffalo Bills warms up before the Pittsburgh Steelers game on Dec. 11, 2016, at New Era Field in Orchard Park, New York. (Brett Carlsen/Getty Images)

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Brown signed with the New England Patriots as an undrafted free agent in 2010. He played with several teams across his seven-year career, including the Indianapolis Colts, Jacksonville Jaguars and the Buffalo Bills. 

He last played in the league in 2016.

Fox News’ Ryan Gaydos and The Associated Press contributed to this report.