UPDATE: CBS News reports the unnamed surviving Border Patrol agent injured in this attack was released from an area hospital, and he has no recollection of what happened.
Update: Survivig border patrol agent has been released from the hospital. He reportedly has no recollection of what happened. https://t.co/3ClwxO262O— David Begnaud (@DavidBegnaud) November 22, 2017
A Border Patrol agent died Sunday morning as a result of injuries he sustained while on patrol in the Big Bend sector, the United States Customs and Border Protection office said. A reward is being offered for information that leads to an arrest in his death.
Texas Gov. Greg Abbott and Sen. Ted Cruz have characterized it as an attack, according to the Associated Press. The FBI has taken over the investigation.
CBP said agent Rogelio Martinez and his partner were responding to "activity" while on patrol in the Van Horn, Texas area near Interstate 10 when Martinez's partner called for help.
He reported they were both injured and needed assistance, CBP said in a statement on its website.
Both agents were transported to an area hospital for treatment, but CBP said Martinez later died of his injuries.
His partner, who was not named in the statement, was reportedly left in serious condition.
The FBI released a statement Monday night confirming that the two Border Patrol agents had "traumatic head injuries" and "other miscellaneous injuries such as broken bones."
"Our thoughts and prayers are with Agent Martinez and his family, and with the agent who was injured," CBP said in the statement.
Governor Greg Abbott also announced a $20,000 reward for information leading to an arrest in the apparent attack. Call the Crime Stoppers hotline at 1-800-252-TIPS (8477)
President Trump tweeted his condolences to the family on Monday. The Associated Press is reporting he said in a meeting he is carrying on with plans to build the border wall and believes that will help the problem of attacks on Border Patrol agents.