'Dangerous' prisoner Michal Kisiel still on the run Published duration 31 May 2017

image copyright Wiltshire Police image caption Michal Kisiel left Salisbury District Hospital after receiving treatment for a head wound

A "dangerous" escaped prisoner, thought to be armed with a razor blade, may have left Wiltshire, police said.

Michal Kisiel, 30, left Salisbury District Hospital on Tuesday evening after escaping from prison guards.

Wiltshire Police said despite searches throughout the day and a "large number" of calls from the public they had been unable to locate him.

Officers said he still requires treatment for a head wound. The public have been advised not to approach him.

Det Insp Mark Kent from Salisbury CID said: "We have been working closely with forces across our borders to ensure that we follow every possible lead.

"I would like to appeal to Michal's friends and to Michal's himself - I would urge him to turn himself in and do the right thing.

'Terrifying ordeal'

One line of inquiry officers are pursuing is that the escape may have been planned and he had assistance.

The force has been using police dogs, drones and a helicopter to search for him.

Kisiel, who sometimes spells his first name Michael or uses the surname Kisier, is described as white, 5ft 6ins tall, with blond hair and of medium build with tattoos on his neck.

He was last seen wearing grey tracksuit bottoms and a black T-shirt with blue trainers.

Kisiel, originally from Poland, was serving a five-year sentence at HMP Erlestoke near Devizes.

He was jailed in April 2016 after keeping a woman and her teenage daughter prisoner in their home in a "terrifying eight-hour ordeal", and threatening to kill them,