The man who fired his gun inside a popular Northwest pizzeria in December pleaded guilty in court on Friday to two weapons charges.

North Carolina Edgar Maddison Welch told police he was motivated by an online conspiracy theory to drive to Comet Ping Pong in D.C. to “self-investigate” disproven claims of child trafficking in the basement headed up by Hillary Clinton and other Democratic elites, nicknamed “Pizzagate.” Comet Ping Pong does not have a basement.

Welch pleaded guilty to a federal charge of interstate transport of firearms and a D.C. charge of assault with a dangerous weapon. Both carry a maximum penalty of 10 years behind bars, though prosecutors and the defense said Welch would face 18 to 60 months for the D.C. charge and 18 to 24 months for the federal charge, which could either be served at once or consecutively.

He has been in custody since the incident, and will remain so through sentencing, which is scheduled for June.

Welch’s lawyer and prosecutors indicated last week that they had reached a plea deal in the case. Under the deal, prosecutors dropped one firearm possession charge.

Per the deal, Welch is also paying $5,744 in damages to Comet Ping Pong, and giving up three guns and ammunition to the government.

The incident made national headlines when it occurred on December 4, following weeks of harassment and death threats over “Pizzagate” for Comet Ping Pong, its employees, and neighbors, and musicians who performed there, causing them to increase security for events.

Welch walked into Comet Ping Pong around 3 p.m. that Sunday afternoon. Before he arrived, he texted a friend that he was “Raiding a pedo ring, possibly sacraficing [sic] the lives of a few for the lives of many,” according to the criminal complaint.

He fired his AR-15 multiple times, causing damage to the restaurant, and pointed his gun at an employee. No one was injured, though the place was evacuated in a panic. Welch gave himself up to police after he did not find any evidence that the online theories were true.

“I just wanted to do some good and went about it the wrong way,” Welch told The New York Times. The intel on this wasn’t 100 percent.”