Police are hunting a serial sex attacker who carried out five indecent assaults on women in Glasgow within 90 minutes.

The man struck on Thursday evening at various spots across the city centre and the west end.

In each case the female victim was grabbed from behind before being indecently assaulted.

The women aged between 20 and 31 were not hurt but were badly shaken, Strathclyde Police said.

The assaults happened between 6.15pm and 7.45pm, beginning at the underpass outside Cowcaddens underground station.

He then struck on Hope Street, also in the city centre, before moving to the west end and assaulting women in Bank Street, Great Western Road and Lancaster Terrace Lane.

Police have appealed for the Hope Street victim to contact them as she did not report the crime herself.

Detective Sergeant Alan Brown said: "As a result of our initial inquiries, I can confirm that we are treating these as linked incidents and believe that the same man is responsible for each one.

"Although the nature of the attacks is a major cause for concern, luckily none of the women assaulted by this man required any required medical attention, but they are all badly shaken.

"The woman who was assaulted in Hope Street hasn't yet come forward to report any details of the attack to police, and I would urge her to do so as a matter of urgency."

He added: "Due to the times of the incidents, it appears that the suspect has covered a fairly significant area over a relatively short period of time and therefore a main line of inquiry will focus on the possible routes and modes of transport that he has used."

The suspect is described as white, slim and in his late teens or early 20s.

He was wearing a black hooded top with a white design, a beige or mustard coloured t-shirt and dark trousers, possibly jeans.

He was carrying a black bag or a holdall.