This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

LAS VEGAS (KLAS) — The man convicted for making a bomb that killed another man outside a Las Vegas Strip resort escaped from prison Tuesday, sources told the 8 News Now Investigators.

Porfirio Duarte-Herrera, 42, is serving a life sentence without the possibility of parole for murder at the Southern Desert Correctional Center, records showed.

Corrections officers determined Duarte-Herrera was missing at 7 a.m. Tuesday, officials said in a news release. A search for him began around 8 a.m.

Porfirio Duarte-Herrera, 42, is serving a life sentence without the possibility of parole for murder at the Southern Desert Correctional Center, records showed. (NDOC/KLAS)

It was not until 1 p.m. that NDOC officials issued a news release on the matter, confirming the 8 News Now Investigators’ earlier reporting.

Duarte-Herrera is described as being 5 feet 4 inches tall, weighing 135 pounds. He has brown hair and brown eyes.

The crime scene as seen from above the parking garage. (KLAS)

Duarte-Herrera and another man were convicted in 2009 for the killing of a 24-year-old man who died when a bomb, hidden in a coffee cup, exploded. The incident happened inside a parking garage at the Luxor hotel in 2007.

A spokesperson for Las Vegas Metro police said the department was aware of the missing convicted murderer and officers were being vigilant.

U.S. Marshals were also assisting in the search.