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PHOENIX (CBSDFW.COM/AP) — The U.S. government landed its second conviction of someone charged with supporting the Islamic State terrorist group after an Arizona man was found guilty of charges that he plotted last spring’s attack at a Prophet Muhammad cartoon contest in Texas.

Abdul Malik Abdul Kareem, an American-born Muslim convert, was accused of providing the guns used at the May 3 event in Garland and hosting two Islamic State followers at his home to discuss the upcoming attack. He also was found guilty of providing support to the Islamic State.

The verdict Thursday marked the second time a person was tried in the U.S. on charges related to the terrorist group. A trial in New York ended a week ago with a guilty verdict against a U.S. military veteran charged with attempting to join Islamic State.

Federal authorities said Kareem’s conviction demonstrates their commitment to combating terrorism.

Assistant U.S. Attorney General John Carlin, head of the U.S. Justice Department’s national security division, said the agency “will continue to prosecute to the fullest extent of the law those who conspire with others to support foreign terrorist organizations and to commit acts of violence.”

Kareem, who faces a maximum prison term of 45 years, was scheduled to be sentenced on June 27.

Kareem’s attorney, Daniel Maynard, declined to comment after the verdict.

Prosecutors say Kareem, who grew up in a Baptist household and converted to Islam as an adult, also went target-shooting in the remote Arizona desert with two men involved in the the Garland cartoon contest shooting, Elton Simpson and Nadir Soofi.

It was the spring of 2015 when two men wearing body armor and armed with assault rifles abruptly stopped their car outside at the Curtis Culwell Center in Garland.

An approaching security officer thought it was a prank, but quickly realized he was mistaken and ran behind a tree as shots erupted. A nearby police officer who spotted one of the men with a rifle unholstered his pistol and killed both men, staving off an attack that authorities said was by followers of the Islamic State terrorist group.

The security officer was wounded in the attack, but no one else was injured.

It’s unknown whether the attack was inspired by the Islamic State or carried out in response to an order from the Islamic State.

Authorities say Kareem, Simpson and Soofi had researched travel to the Middle East to join fighters for the terrorist group.

Kareem testified that he had no knowledge beforehand that his friends were going to attack the contest featuring cartoons deemed offensive to Muslims. He insisted that he didn’t even know about the event until after Simpson and Soofi were killed.

Prosecutors said Kareem tried to carry out an insurance scam to fund a conspiracy to support the Islamic State group and attempted to indoctrinate two teenage boys in his neighborhood on radical jihadism.

They also say Kareem, Simpson and Soofi initially wanted to blow up the Arizona stadium where the 2015 Super Bowl was held, but when that plan failed, they set their sights on the cartoon contest.

Kareem told jurors that he evicted Simpson from his home because he believed Simpson was putting tracking devices in his car. He also said he strongly disapproved of Simpson using Kareem’s laptop to watch al-Qaida promotional materials.

Stefan Verdugo, one of Kareem’s former roommates, testified that Kareem wanted to get revenge against people who portrayed the Prophet Muhammad in drawings and had inquired about the types of explosives that would be needed to blow up the stadium.

Defense attorneys attacked Verdugo’s credibility by pointing out that he is in jail on a sex-trafficking charge.

Kareem denied inquiring about explosives.

(©2016 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)