Authorities in Casa Grande are searching for one of one of three immigration inmates who escaped from a prison transport vehicle Tuesday night.

A spokesperson for Casa Grande Police said it is assisting Border Patrol in searching for the inmates. The search is happening near State Route 287 and Trekell.

At one point, police were looking for three inmates.

Casa Grande police said via Twitter that two inmate was in custody. The third one is still missing.

#CGPD apprehends 2nd escapee Augusto Daniel Chavez-Sosa. 3rd escapee remains outstanding. https://t.co/EyjnwesiY4 pic.twitter.com/q81oLICeJq — Casa Grande Police (@CasaGrandePD) May 25, 2016

Photos of the 2 outstanding Border Patrol escapees. The 3rd subject, already taken into custody, is not shown here. pic.twitter.com/DIn1fqGn39 — Casa Grande Police (@CasaGrandePD) May 25, 2016

Border Patrol said the three inmates were being transported from Ajo to the Casa Grande Border Patrol station. While the bus was stopped at a traffic light, the inmates escaped through the ceiling hatch of the bus.

Police have asked people to avoid the area and to stay inside.

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