Police in London have arrested two men in connection with four attacks on three subway trains and a double-decker bus on Thursday, a scene hauntingly
similar to deadly explosions set off by four suicide bombers exactly two weeks before. It was an inescapable message that life in London now means
living with the threat of terror.
The explosive devices were either faulty or too small to cause bloodshed, and the only reported injury turned out to be an asthma attack.

The Catch
Police said one man was detained near Downing Street, site of the prime minister's residence; the other was picked up near Tottenham Court Road,
close to the Warren Street subway station where one attack took place.

Source
That was quick.
Same batch?