Commissioner Mark Costello stabbed to death

Oklahoma Labor Commissioner Mark Costello was stabbed and killed Sunday at an Oklahoma City restaurant and his son was arrested as a suspect in the killing.

Costello, 59, was stabbed in the neck and head. He was taken to the OU Medical Center where he died. The attack occurred at a Braum’s restaurant at 11224 N. May Ave. about 6:30 p.m.

Published reports said that police arrested Christian Costello, 26, as a suspect in the slaying. Witnesses said he and his father argued in the restaurant and that he was stabbed inside the restaurant and later as he fled to his car.

Christian Costello could face charges of first-degree murder.

Since 2012, Christian Costello has been on probation after he pled guilty to assault and battery, driving under the influence of a drug and failure to obey a traffic control device. In 2013, he was charged with outraging public decency and he was due in court in October.

Mark Costello had considered running for governor in 2018 but instead had informally decided to run for lieutenant governor.

Mark Costello was elected labor commissioner in November 2010 with 64 percent of the vote. He was born and raised in Bartlesville and graduated from College High School. He is survived by his wife, three sons and two daughters.

His death stunned his friends and supporters.

“My wife and I are devastated by the loss of our friend, Mark Costello,” said U.S. Rep. Jim Bridenstine, R-Oklahoma. “He was a principled servant, deeply committed to his faith and to Oklahoma.  Our prayers are with Cathy and the Costello family.”

“Mark was a friend to me and a friend to Tulsa,” said Tulsa Mayor Dewey Bartlett. “He recently assisted our city employees with our safety culture initiative and was very supportive of our efforts. I am shocked and saddened by this huge loss for Oklahoma and my prayers go to Mark’s family during this incredibly difficult time.”

“My family is stunned and deeply grieved to hear of the tragic death … Mark was a friend, and as we grieve, we will also pray for his family as they deal with this unbelievable tragedy,” said U.S. Sen. James Lankford, R-Oklahoma.

“I am deeply saddened by the loss of my dear friend Mark Costello. He was a wonderful leader and public servant. This is a major loss to the state of Oklahoma and everyone who loved Mark. My thoughts and prayers go out to his beloved wife Cathy and their family,”  said Oklahoma Insurance Commissioner John Doak..