Gardaí are seeking help in tracing a man who's wanted for questioning by UK police in relation to a number of serious crimes.

Police in Lancashire want to question 18-year-old Ryan Humpage in connection with rape, theft and assault allegations.

He's believed to have been in County Kildare and County Sligo in recent weeks.

Gardai say he may be using various names, which include Dylan Dunne, Ryan Willington, Ryan Williams and Karl Ward.

He's described as dangerous and Gardai are advising anyone with information to call 999.