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Police are investigating two more attempted assaults

Two more attempted sexual assaults on women are being investigated by police in County Londonderry, bringing the number to five in one week.

Police believe four of the attacks may have been carried out by one man.

The most recent attack happened early on Friday, when a man tried to drag a teenage girl into a car at Creggan Street. She managed to escape.

Detectives are not linking the attack to four others. They have advised women to carry personal attack alarms.

In the Creggan Street incident, the vehicle - a blue car with a boot spoiler - had driven past the girl a number of times, sounding its horn.

There were two men in it, but the girl managed to shrug off her attacker and get away.

The most recent of the four linked attacks happened in the early hours of Wednesday.

A man grabbed a teenage girl from behind as she was taking a shortcut near Creggan reservoir.

He knocked her to the ground and tried to assault her. The girl managed to fight the man off.

Police believe the attacker may have tried to rape two women in the city last weekend, and attempted a sexual assault last Tuesday.

He is described as being around 6 ft tall, in his 30s and was wearing a dark hooded top.

The police want anyone with information to contact them on 7136 7337, or to ring Crimestoppers on 0800 555 111.