An Indiana man pleaded guilty to distributing information regarding the manufacture and use of explosives for carrying out terrorism in the country. The man, identified as Marlonn Hicks, 30, also expressed his interest to travel to territory under control of the Islamic State group, also called ISIS.

The charges against Hicks were announced Friday by the Acting Assistant Attorney General for National Security Mary B. McCord, U.S.  Attorney David Capp of the Northern District of Indiana and Special Agent in Charge W. Jay Abbott of the FBI’s Indianapolis Field Office.

Authorities revealed that Hicks allegedly communicated online with multiple individuals who were cooperating with the government when he said he wanted to travel to ISIS-held territories.

Prosecutors said Hicks sent detailed instructions on how to make explosives to a government source who he thought would use the information to attack the U.S. He also said he wanted to carry out attacks in support of ISIS.

The case was investigated by the FBI’s Indianapolis Division and the Indianapolis Joint Terrorism Task Force. The case is being prosecuted by the National Security Division’s Counterterrorism Section and the U.S. Attorney’s Office of the District of Indiana.

Hicks faces a maximum penalty of 20 years in prison and could also be fined $1 million.