BOARDMAN TWP., Ohio - A Boardman man, who just turned 18-years-old in May, ran an online chat room that made threats about shooting up a gay bar, planned parenthood, and federal agents, according to a police report.

Justin Olsen is in the Mahoning County Jail on charges of aggravated menacing a police officer and telephone harassment after he was arrested Wednesday at his father's Oakridge Drive home.

Police and FBI agents say they confiscated a computer, iPad, iPhone, as well as“numerous” handguns, long guns, and ammunition when they searched the home following Olsen's arrest.

According to the police report, the Anchorage, Alaska office of the FBI began investigating in February when it found several posts in the chat room making light of mass shootings targeting Planned Parenthood.

Agents traced the chat room to Olsen's address in Boardman, which was on Presidential Drive at the time.

The FBI says a posting in June stated: “can't wait to start stockpiling weapons.” Additionally, agents say Olsen has admitted writing “shoot every federal agent in sight” in response to a comment from one of the chat room users.

The following day, according to the FBI, a screenshot of an AR-15 assault rifle parts kit was posted on the chat room, along with comments that a person, who's name is redacted from the report, may purchase the gun kit the next day.

The report says Assistant Mahoning County Prosecutor Michael McBride decided on Tuesday that they couldn't wait to act on the information because of the recent mass shootings in the United States.

When police didn't find Olsen at his Presidential Drive home, they later spotted him in the driveway of his father's Oakridge Drive home, where he was arrested.

After reading Olsen his rights, police say he admitted writing the post about “shooting every federal agent in sight.” However, Olsen told police that it was a joke and further described the chat room as his “sh-t account.”

Olsen is expected to appear in county court in Boardman on Thursday to answer the charges.