A Texas man was arrested for threatening to perpetrate a mass shooting man at Sunday’s NFL playoff game between the Jacksonville Jaguars and Pittsburgh Steelers.

According to the arrest affidavit, 30-year-old Yuttana Choochongkol of San Antonio made multiple threats to kill NFL players, fans and himself during the game at Heinz Field in Pittsburgh. He was charged with making a terrorist threat to the public.

According to The Washington Post, KDKA-TV in Pittsburgh received a threat Thursday from Choochongkol that read:

“This Sunday’s playoff game in Pittsburgh is going to be like no other. Why? Because it’s going to be my last day on this pathetic planet. So why not take some innocent lives with me? The Steelers game will be packed, and that’s when I plan on killing Steelers football players and fans before taking my own pitiful life. After all, what does a person that is going to commit suicide have to lose? Absolutely nothing. So why not take out some million dollar Steelers players before me? Sounds like a good idea. Hahahahahah”

Also on Thursday, the director of security for Heinz Field received a similar threat, which was uploaded to heinzfield.com from someone utilizing the same username and IP address.

Both recipients of the threatening messages sent the IP address to the FBI to assist them in tracking the perpetrator. The messages were traced to Worldwide Clinical Trials in San Antonio.

After inspecting images on security cameras and interviewing workers at Worldwide Clinical Trials, authorities identified Choochongkol as the suspect.

The affidavit revealed that, since 2011, Choochonkol has participated in 25 medical trials conducted by the company.

In a Sunday statement, the Steelers thanked law enforcement entities for their efforts.

“The Heinz Field website received a threat concerning the playoff game vs. Jacksonville,” read the statement. “We take all threats seriously and turned over information to the FBI and the City of Pittsburgh police. We are thankful law enforcement was able to identify and track down the individual to make an arrest. We appreciate the hard work and attention that our law enforcement provides to our communities.”