FBI increases reward, sets up billboards seeking info on death of border patrol agent

A digital billboard asking for information will be visible until Dec. 8 in Southern California, Arizona, New Mexico and Texas.

Authorities are increasing the reward for information on the death of Border Patrol Agent Rogelio Martinez who died while on duty on Nov. 19.

A reward of up to $70,000 is being offered by the FBI and the State of Texas for information on the incident.

The original reward was of up to $25,000.

The FBI is also extending its search to several states to find information on the death of Martinez.

The agency set up billboards asking for information. Those billboards will be visible in Southern California, Arizona, New Mexico and Texas until Dec. 8.

According to FBI agent in charge Emmerson Buie Jr., agent Rogelio Martinez and another agent were found around 11:20 p.m. Nov. 18 in a culvert area near Interstate 10, about 12 miles east of Van Horn.

The two agents received traumatic head injuries and other physical injuries, and they were taken to a hospital in Van Horn, said Buie.

Their injuries were so severe, they needed advanced medical care, and the agents were airlifted to a hospital in El Paso, the FBI said.

Martinez died from his injuries early Sunday morning, and the second agent, who has not been identified, remains at the El Paso hospital.

Investigators haven't released certain details about the case, including what time it happened and whether they're pursuing specific suspects. Jeanette Harper, FBI spokeswoman, said the border agents were not shot.

A Texas sheriff who was among the first people to reach the agents said he thinks they were hurt in an accident, not an attack.

U.S. Customs and Border Patrol Official Rush Carter said all the agency can confirm is that the two agents were injured and that a joint investigation with the FBI will hopefully determine how that happened.

Buie said the FBI is the lead agency investigating this "potential assault on a federal agent officer."

"We are aggressively investigating all leads from the public in regards to this investigation that is ongoing," said Buie.

Authorities continue to investigate the "crime" scene where the two agents were found and the Van Horn and Fort Stockton area, said Buie.