1 charged, 1 sought in NE Side murder

Rodney Walker, 30, has been in custody since day after murder

SAN ANTONIO – A murder charge officially has been filed against Rodney Walker, 30, in connection with a shooting death at a Northeast Side apartment complex earlier this month.

Walker, however, has been in custody since Feb. 13, the day after the fatal shooting.

An arrest warrant affidavit stated that he was arrested at that time in connection with a domestic dispute involving his girlfriend.

She reportedly told San Antonio police officers who responded that they began fighting after Walker told her of his involvement in the murder of Matthew Winkelman, 30, the affidavit stated.

Winkelman was gunned down in the parking lot of the Whispering Heights apartments in the 200 block of Rainbow Street on Feb. 12.

The affidavit stated that he was involved in an argument with Walker and another man.

After his arrest in the domestic violence case, Walker admitted to detectives that he also was involved in the murder, but said that someone else pulled the trigger, the affidavit stated.

Detectives said Walker told them he gave a nod, signaling to the other man to shoot Winkelman.

The suspected triggerman is identified by name in the affidavit. However, as of Tuesday morning, he had not been arrested.

Yet another man, Richard Martinez, 24, faces criminal charges in connection with an incident that happened soon after the murder.

He was taken into custody at a home near the apartment complex where Winkelman was shot.

Police said Martinez fired shots at a detective who had arrived to investigate the murder.

Martinez is not a suspect in Winkelman's murder, police said.

Police are still searching for the second suspect in the murder case.

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