Iraqi security officials say militants from the al-Qaeda-inspired group Islamic State of Iraq and the Levant (ISIS) have seized the northern city of Tikrit.

They captured Mosul yesterday, facing little resistance from Iraqi armed forces. Up to half a million people have fled their homes in Mosul.

ISIS are now heading south into Samarra, and are reported to be about 80 miles from Baghdad.

A picture taken with a mobile phone shows uniforms belonging to Iraqi security forces scattered on the road in Mosul
A picture taken with a mobile phone shows uniforms belonging to Iraqi security forces scattered on the road in MosulReuters
A burnt vehicle belonging to the Iraqi security forces is left on a road in Mosul
A burnt vehicle belonging to the Iraqi security forces is left on a road in MosulReuters
Children stand next to a burnt-out vehicle during clashes between Iraqi security forces and al Qaeda-linked Islamic State in Iraq and the Levant (ISIL) in the northern Iraq city of Mosul
Children stand next to a burnt-out vehicle during clashes between Iraqi security forces and al Qaeda-linked Islamic State in Iraq and the Levant (ISIL) in the northern Iraq city of MosulReuters
A picture taken with a mobile phone shows Iraqi soldiers talking as smoke billows behind them on a road in Hawijah, west of Kirkuk
A picture taken with a mobile phone shows Iraqi soldiers talking as smoke billows behind them on a road in Hawijah, west of KirkukAFP
A picture taken with a mobile phone shows a vehicle ablaze on a road in Hawijah, west of Kirkuk
A picture taken with a mobile phone shows a vehicle ablaze on a road in Hawijah, west of KirkukAFP
Members of the Kurdish security forces pose for a picture as they take part in an intensive security deployment on the outskirts of Kirkuk
Members of the Kurdish security forces pose for a picture as they take part in an intensive security deployment on the outskirts of KirkukReuters
Iraqi policemen climb onto a roof of a military base in Baghdad as Jihadists sweep south towards the capital
Iraqi policemen climb onto a roof of a military base in Baghdad as Jihadists sweep south towards the capitalAFP