Owning a GPS jammer is in itself not illegal, but using the devices to interfere with signals is a crime, according to the Southeastern Finland Police Department.
The suspect, who was later found dead on the premises of a burnt-down home, apparently sought to close off some of the church exits with rope, according to Southeastern Finland Police Department.
Police and staff from Fortum and nuclear watchdog Stuk were on hand to supervise the transfer of nuclear fuel, which is not subject to EU sanctions. On Sunday, police said they were investigating a drone seen operating at the airport at the time.