Qld police search for three missing kids

Queensland police are seeking information about three young children who went missing last month and are believed to be travelling with a man known to them.

Police are calling for help to find three young children who went missing from Brisbane last month. (AAP)

Police are calling on the public to help find three young children who went missing from Brisbane last month.

The twin five-year-old girls and the boy, six, were last seen in Cleveland on September 24 with 39-year-old Marcin Kurek, who is known to them.

They are believed to be travelling in a silver 2009 Proton sedan with Queensland registration 806-XLP.

Mr Kurek is 175cm tall with thinning blonde hair and green eyes.

The boy is 120cm tall with a thin build, black hair and brown eyes.

The girls are 100cm tall with slim builds, black hair and brown eyes.

Anyone with information about their whereabouts should contact police.