A man from Ohio was arrested Wednesday after being accused of plotting to attack the U.S. Capitol. He was allegedly a sympathizer of the Islamic State terror group and allegedly wanted to set up an ISIS cell in the U.S. A complaint was filed Wednesday.

The complaint stated that the man, 20-year-old Christopher Lee Cornell of Cincinnati, was plotting with the undercover operative to set off pipe bombs at the U.S. Capitol and shoot the people fleeing the scene. He saved money, researched the construction of pipe bombs and he researched the government buildings being targeted. He also bought 600 rounds of ammunition and two M-15 semi-automatic rifles and an FBI affidavit stated that the undercover operative watched him purchase the items.

Cornell’s preliminary hearing is scheduled for Jan. 22 in Cincinnati’s U.S. District Court. He is being charged for possession of a firearm “in furtherance of an attempted crime of violence” and for attempting to kill a U.S. government officer.

He allegedly told the court that he had been in contact with someone overseas who aligned himself with ISIS. Court documents revealed that Cornell wished to go on with plans for “violent jihad.” He also said that he thought waging jihad under their “own orders” was a good idea, according to the filed complaint.

The complaint also illustrated Cornell expressing to the operative that they should create a group in alliance with the Islamic State in the U.S. and plan operations themselves. Additionally, Cornell told the operative in a meeting that Anwar al-Awlaki, Muslim cleric born in the U.S. who was killed in September 2011 by a U.S. drone and was the first U.S. citizen to be put on the U.S. kill-or-capture list, and others encouraged his actions.

Along with the FBI, the Green Township Police Department, the U.S. Capitol Police, the Colerain Police Department and the Cincinnati Police Department were involved in the investigation.

Another man, Rezwan Ferdaus of Ashland, Mass., was charged with planning to attack the Capitol–and the Pentagon–in 2011. Instead of firearms, ammunition and pipe bombs, Ferdaus was going to use a remote-controlled aircraft filled with explosives made of plastic. He was sentenced to 17 years in jail, and he was also dealing with undercover operatives during the entirety of his planning.