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Police have issued an apology after football fans were pepper-sprayed by officers during Saturday's clash with Stoke and Preston North End.
Visiting supporters, including children, were sprayed by police during the half-time interval on the away concourse at Deepdale, reports the Stoke Sentinel.
It has been suggested that some fans had been trying to leave the stadium to have a cigarette.
Lancashire Police are to launch an investigation into the incident and Football Supporters Federation case worker Amanda Jacks will attend a de-brief on Tuesday.