North Wales Police are appealing for witnesses following a fire in Bangor during the early hours of this morning.
A spokeperson for the force said: "Shortly before 2am, we received a report that a deliberate fire had been ignited on a wooden bridge which crosses over Afon Cegin within the woodland area behind Queens Avenue, Maesgeirchen.
"North Wales Fire and Rescue Service attended the area to contain the fire, which is believed to have been started by accelerant being poured onto the bridge and ignited.
"Anybody who saw the incident or witnessed any suspicious behaviour in the area overnight is asked to contact police."
Anyone with information that could assist North Wales Police should call 101, or anonymously via Crimestoppers, quoting reference 26000055252.