The 24 year old escaped convict is said to be violent

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The 24 year old is thought to have planned his escape over a long period of time to avoid being deported back to Somalia.

Police said he managed to flee through a security window in early August which had a design flaw at the psychiatric clinic in Alzey, in Rheinland-Pfalz, west Germany.

He then boarded a train from Wörrstadt to Mainz, 24km away, towards Frankfurt

The man was sentenced last year to six years in prison for two attempted manslaughters.

He was first tried for attempted murder but had the charges downgraded to manslaughter.

While in prison he started displaying behavioural issues so he was transferred to the psychiatric unit.

Police have warned members of the public to not approach the man as he is considered violent.

Anybody who recognises the man is asked to contact police straight away.

He is described as 1.72m tall, weighing 85kg, with black hair shaven on the sides, with dark skin.

He has a thin moustache and beard on his lower chin and is wearing dark tracksuit bottoms with a bright stripe on the side as well as slippers.