DHAKA: Islamic State militants could grow strong enough to target people on the streets of Britain unless action is taken.

UK premier David Cameron has warned, reports the BBC.

The PM, writing in the Sunday Telegraph, said a ‘humanitarian response’ to IS was not enough and a ‘firm security response’ was needed.

It comes as Church leaders expressed concern that the UK had no ‘coherent’ approach to tackling Islamic extremism.

IS has seized large parts of northern Iraq and Syria over the summer.

Kurdish forces, supported by US air strikes, are currently battling to retake Mosul dam from IS fighters in northern Iraq.

There are also continuing reports of massacres of non-Muslims by the extreme Sunni group, which is seeking to build a new Islamic state spanning Iraq and Syria.

BDST: 1407 HRS, AUG 17, 2014