Armstrong, 34, charged in the May 11 shooting of Wilson – who previously dated Armstrong’s boyfriend – in what investigators believe was a fatal act of romantic jealousy. A homicide warrant was issued for Armstrong on May 17.
On the night of the murder, Wilson was staying with a friend in Austin in preparation for a run, according to an affidavit of arrest filed by police in Travis County District Court.
Officers attended the home shortly before 10 p.m. to find Wilson with gunshot wounds, police say. She was pronounced dead at the scene.
Surveillance video shows a vehicle like Armstrong’s near the scene of the shooting, according to the affidavit.
Traveler believed to be Armstrong
Photos and surveillance video also show a person believed to be Armstrong at Austin-Bergstrom International Airport around 12:30 p.m. on May 14, according to a US Marshals Service press release.
Armstrong, an Austin-based real estate agent and yoga instructor, boarded a flight from Austin to Hobby Airport in Houston and then took a connecting flight to LaGuardia Airport in New York, the press release said. .
Armstrong was last seen wearing a black shirt with a pink chest design, white jeans, a blue denim jacket, black and white tennis shoes and a black face mask. She may have had a yoga mat carrier on her shoulders, the statement said.
Armstrong weighs about 125 pounds and is about 5 feet 8 inches tall.
Anyone with information on his whereabouts is asked to contact the US Marshals Service at 1-800-336-0102.