Former NFL player Sergio Brown arrested in connection with his mother's death after disappearing to Mexico

• Police have arrested former NFL player Sergio Brown in connection with his mother's death.
• Mexico deported Brown on Tuesday. San Diego law enforcement arrested him shortly after.

Former NFL player Sergio Brown went missing in September after his mother was found dead in a creek near her Illinois home.

Brown continued to post a series of bizarre Instagram videos in the days after his mother's death as Illinois police searched for him.

It turned out he had gone to Mexico.

He's now back after Mexican authorities located and deported him, CNN reported. San Diego police arrested him on Tuesday and plan to move him today to Illinois, where there's a warrant for his arrest.

Police in Maywood, Illinois found Brown's mother, Myrtle Brown, 73, dead in a creek near her home on September 16. The Maywood Medical Examiner's Office soon determined that Mrytle Brown died from an assault and deemed it a homicide.

In the days and weeks that followed, police searched for Brown. In one Instagram video, Brown claimed either the FBI or police broke into his home "twice" and that he thought his mother was on vacation, Insider previously reported.

Mexican officials had known Brown's whereabouts since September 19, but did not deport him until Tuesday after Illinois law enforcement produced an arrest warrant, according to CNN.