The roommate of the accused Austin, Texas, bomber is being considered a “person of interest” in the ongoing investigation into the multiple explosions that left two people dead, according to Texas Rep. Michael McCaulMichael Thomas McCaulWhite House announces diplomatic boycott of Beijing Olympics WTA suspends tournaments in China pending investigation into star Peng Shuai's allegations Biden administration resists tougher Russia sanctions in Congress MORE (R).

One of the roommates of the suspected bomber, Mark Anthony Conditt, 23, is still being questioned by police, according to McCaul, the chairman of the House Homeland Security Committee.

“I would say at this point, a person of interest is being questioned,” McCaul told Fox News on Monday.

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Authorities are probing whether the roommate, an unidentified man in his 20s, knew that Conditt was making weapons at their home northeast of Austin.

“If you have knowledge of someone doing something like this, making bombs, and bombing the community and terrorizing the community, you have an obligation, a duty to report that,” McCaul said. “If not, you have knowledge and you're complicit with the conspiracy. When we talk about ongoing investigation, even though the operation center is wound down at this point, what is continuing at this point is the questioning of the roommate.”

On Sunday, McCaul said that Conditt showed no remorse for his actions and called himself a “psychopath” in a recording that police discovered last week and are treating as a confession.

Earlier this month, the bombing suspect left packages with explosives on doorsteps overnight and rigged a tripwire to explode on a public trail. He also sent two packages with bombs using FedEx, one of which exploded at a distribution center in San Antonio.