Police in Derry are investigating an incident during which a security staff member was found unconscious at a building site on Long Tower Street.

The incident happened on February 7 but details were only released today.

A PSNI spokesperson said that at this stage it is not known how the man came to be injured.

“Therefore we are appealing for anyone who saw suspicious activity in the area between 10.50pm and 11.45pm to contact them. The man was treated in hospital for a bump to the head.”

Anyone with information about any of these incidents is asked to contact police on 0845 600 8000.

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