Counterterror police examine three explosive devices in London

LONDON (AP) – Three small explosive devices in plastic mailing bags arrived at offices for two London airports and at a train station on Tuesday, and Irish police said they were helping British counterterrorism police with the investigation.

London’s Metropolitan Police Service said the devices found near London’s Heathrow and City airports and at Waterloo Station “appear capable of igniting an initially small fire when opened.”

A staff member did unseal the bag sent to an office building on Heathrow’s grounds, “causing the device to initiate,” the police department said.

Part of the package burned, but no one was injured, police said. The Compass Centre was evacuated as a precaution. The building is not close to passenger terminals at Heathrow, Britain’s busiest airport, and flights were not affected.

The Heathrow property is where the first of the three explosive devices was discovered at about 9.55am.

Transportation police received a call at 11.40am. after another suspicious package turned up in the mail room at busy Waterloo Station. The last was found just after noon at the administration building for City Airport, a much smaller commercial airport. No one had opened either of those packages.

The Metropolitan Police Counter Terrorism Command “is treating the incidents as a linked series” and “keeping an open mind regarding motives,” the department said in a statement.