Several small letter bombs were discovered on Tuesday in different locations in London. The Anti-terrorist unit were determined. Arrests there were.

In the vicinity of the London City Airport, Heathrow airport and Waterloo station envelopes were found in which small yellow plastic bags were. It was rigged with explosives, but which were probably only able to minor causing fires, said Scotland Yard. No one was hurt.

All the three envelopes were in administrative buildings discovered. The police believe that the incidents are related to each other. A motive, nothing was known. The air traffic was not affected, even at Waterloo station, it came to default. Only the trains to the City Airport, drove at times.

One of the DIN-A4-envelopes was partially in flames, as an employee of Heathrow airport opened. The building is not located directly on the airport site, was evacuated.

The envelopes at London City Airport and Waterloo station, could be mitigated without the explosives were triggered. Also at the City Airport, a building temporarily as a precaution, evacuated. At Waterloo Station, a small area outside the station was cordoned off.

London mayor Sadiq Khan expressed his thanks in a message at the security forces for their quick reaction. He called on the population of the capital and visitors, to remain vigilant and to report suspicious packages.