DALLAS (CBSDFW.COM) – The North Texas Fugitive Task Force arrested Angelo “Lo” Walker in connection to the shooting death of 22-year-old Merci ‘Mack’ Richey.

Dallas police said her family told them she was known as Merci Richey, but to her community, she was known as Merci Mack.

Merci Mack was a Black, transgender woman found shot to death by a witness crossing the fence into the Stone Crest Apartments at 3015 E Ledbetter Drive on Tuesday, June 30 around 6:15 a.m.

Police found several fired 40. caliber casings near her body as well as multiple fired bullets.

Another witness told police that on the night of the shooting, he saw Walker sitting outside wearing all black and a ski mask. The witness told police Walker always wears a ski mask rolled up on his head and when he’s around people, he pulls it down over his face. Walker chased Mack through the parking lot, firing at her, according to the witness, and when she was down on the ground, he stood over her firing multiple shots.

The witness told police that the altercation between Walker and Mack was over a video she was going to release on Facebook of them together.

Walker was charged with murder.

(courtesy: Facebook)