EL MONTE (CBSLA.com) — An arrest has been made in the Oct. 21 shooting death of a 25-year-old employee during an attempted robbery at an El Monte fast food restaurant, but an accomplice in the crime remains at large, authorities said Thursday.

(credit: Los Angeles County Sheriff's Department)

(credit: Los Angeles County Sheriff’s Department)

Louie Francisco Herrera, 20, is being held without bail in connection with the death of Juan Manuel Vidal, who was gunned down in a Jack in the Box restaurant, according to the sheriff’s department.

Vidal had recently completed pharmacy technician training and was engaged to be married, authorities said.

Rewards for information leading to Vidal’s masked killer totaling $55,000 were offered by the Los Angeles County Board of Supervisors, El Monte, the Jack in the Box franchise where Vidal worked and the restaurant’s corporate office.

The sheriff’s department had released surveillance images of the shooter in the hope that someone could help identify him.

“An armed, masked male entered the business and immediately jumped over the counter where the victim was standing in an apparent armed robbery attempt,” Deputy Ryan Rouzan of the Sheriff’s Information Bureau said.

Sheriff’s officials initially said the suspect was seen running from the scene, but officials said Thursday they were continuing to ask for public help to find another suspect believed to have a been a getaway driver.

Anyone with information on the case can call the Sheriff’s Homicide Bureau at (323) 890-5500.

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