Police make arrest in fatal shooting on South Side

Ace Austin Martinez, 24, charged with capital murder

SAN ANTONIO – An arrest has been made in connection with the shooting death of a man outside his South Side home Monday afternoon.

Ace Austin Martinez, 24, was taken into custody late Tuesday on a charge of capital murder.

According to an arrest warrant affidavit, San Antonio police investigators believe he fired the shot that killed Michael Calderon, 22, in the 100 block of W. Vestal.

RELATED: Man shot, killed in front of home on South Side identified

RELATED: Man dies after being shot in front of home on South Side

The affidavit said Calderon's girlfriend told police they were outside his home when three men walked up, began arguing with the victim and then beat him.

At one point, one of the men pulled out a gun and shot Calderon, killing him.

Police said the attack was caught on camera. However, it appears, initially, they did not know the identity of any of the men in the video.

The affidavit said a tipster came forward later, giving them Martinez's name and telling them that he  had confessed to committing the murder.

It appears that police have not identified the other two men who were involved yet.

About the Authors:

Katrina Webber joined KSAT 12 in December 2009. She reports for Good Morning San Antonio. Katrina was born and raised in Queens, NY, but after living in Gulf Coast states for the past decade, she feels right at home in Texas. It's not unusual to find her singing karaoke or leading a song with her church choir when she's not on-air.

Ben Spicer is a digital journalist who works the early morning shift for KSAT.