AN investigation is underway into the cause of a large fire at a building in Birkenhead last night.

Firecrews were called to reports of a blaze in Park Street just after 10.40pm.

On arrival they found the first floor of a building, approximately 30m x 50m, well alight.

There were no reports of any injuries.

Six fire engines were in attendance.

The combined platform ladder has also been requested.

Nearby residents and businesses were advised to keep windows and doors closed.

Fire crews left the scene at 2.07am.

Merseyside Police remained in attendance.