On 12 March, five Zeppelins attempted a raid on the Midlands: headwinds caused them to mistake their position and two dropped their bombs in the sea, the rest bombing the Hull area with little effect, their commanders thinking that they were over Leeds. Another raid was attempted the following night but only one of the three airships reached England, bombing Hartlepool. The bombs killed eight people and an RFC pilot was killed when he flew into Pontop Pike near Dipton, County Durham. A third airship raid took place on 12 April: again the altitude and weather caused navigational problems and although attacks were claimed on a number of towns in the Midlands, most of the bombs fell in open countryside. Seven people were killed, 20 injured and £11,673 damage was caused.