SALINA, Kan. (AP) — Three Kansas men who are under investigation in last month’s shooting of an Illinois police officer have appeared in court on charges accusing them of plotting to kill three other men.

The Salina Journal reports that 22-year-old Alex Karcher, 22-year-old Xavier McCray and 24-year-old Xavier Lewis met Monday in Saline County District Court with the judge who will handle their cases. They each are jailed on $1 million bond.

Karcher’s attorney didn’t immediately return a phone message from The Associated Press seeking comment. The other two men don’t have attorneys.

Carbondale, Illinois, officer Trey Harris was wounded during the same time frame in which the three men are accused in a criminal complaint of agreeing to travel to the state to commit capital murder. No one was killed.