A contractor has threatened to pull out of a housing estate in Derry if attacks on his workers continue.
The company, which is laying gas pipes, said one of its drivers was attacked yesterday at a site on the Ringfort Road in Hazelbank.
In a separate incident a van driver was assaulted at Marianus Park and his vehicle damaged.
Sinn Fein councillor Billy Page witnessed one of the incidents and he said the youths attacked the man with branches.
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