A veteran former Bexar County Sheriff’s Office narcotics officer is on trial facing theft, fraud and misapplication of funds charges.

Det. Anthony Alvarado allegedly would use blank vouchers to obtain cash for confidential informants and then only give informants a portion of the money.

He also, according to testimony from a fellow deputy, would have other deputies sign vouchers prematurely.

“What I did was believe that a fellow officer would be doing the right thing,” Deputy Miguel Gonzalez testified on Monday.

Gonzalez said he would sign vouchers when asked to do so by Alvarado.

“The amounts were discussed between him and a supervisor to authorize the release of funds,” Gonzalez testified. “Was it premature? It may have been.”

Gonzalez said he was new to the narcotics division and Alvarado was experienced and making a lot of cases.

“He was a good officer,” he said. “I’m grateful for what he did for me.”

Alvarado was fired following an internal investigation.

If convicted, he faces a maximum sentence of 10 years in prison.

Testimony will continue on Tuesday in Judge Lori Valenzuela’s 437th District Court.

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