AUSTIN, Texas – An arrest warrant in the fatal shooting of professional cyclist Anna Moriah Wilson details a love triangle that includes a male professional cyclist and the woman he lives with, according to Austin police.

Wilson, 25, was found dead May 11 in an East Austin home on Maple Avenue. She had traveled from San Francisco and was staying in town before riding in a gravel race in Hico, northwest of Waco, that coming weekend.

Kaitlin Marie Armstrong, 34, of Austin, faces a murder charge in connection with the shooting. Police spoke with Armstrong on May 12 – the day after Wilson was killed – and confronted her with video surveillance that investigators say shows a vehicle matching one she drives pulling up to the residence where Wilson was staying. One minute earlier, Wilson had returned to the home after swimming with Armstrong’s boyfriend.

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Armstrong, police said, nodded in agreement when detectives told her the video did not look good for her.

Armstrong has not been arrested. Police say she deleted her social media accounts and that her boyfriend told them he has not seen her since May 13. Her account on Strava –an online cycling and fitness platform – remains public and shows that she last cycled on May 11, the day Wilson died.

On Friday, the U.S. Marshals Lone Star Fugitive Task Force announced it is conducting a “fugitive investigation” and asked for the public’s help in locating Armstrong.

The affidavit reveals a romantic entanglement that began in October when Armstrong split with her longtime boyfriend, professional cyclist Colin Strickland. During a brief break in that relationship, Strickland met and became involved with Wilson, only to soon get back together with Armstrong.

According to police, a tipster assisting in the homicide investigation told detectives that Armstrong learned in January about Strickland’s relationship with Wilson and “became furious and was shaking in anger.” The tipster told police that Armstrong said she wanted to kill Wilson. Around that time, police say Strickland bought two firearms: a 9 mm handgun for himself, and another for Armstrong.

In searching the home where Armstrong lives with Strickland, investigators say they seized a 9 mm handgun belonging to Armstrong. In comparing shell cases fired from that gun to those found in the home where Wilson was killed, police say the potential that the same firearm was used is “significant.”

Colin Strickland describes relationship with Wilson

Strickland, a professional cyclist sponsored by Red Bull, issued a statement to the American-Statesman on Friday saying he had a brief relationship with Wilson after meeting her in Austin in October. He said that after that fling, which lasted about a week, his relationship with Wilson turned platonic and professional, and that he got back together with Armstrong. He said he was no longer romantically involved with Wilson.