A man was assaulted after after he opened the door to three men, in what police are treating as an "unprovoked attack."

The 53-year-old victim was attacked at a house in Dobbie's Road in Bonnyrigg, Midlothian.

Police said he was immediately assaulted after answering the door, and suffered serious head and face injuries.

The attack took place around 10.45pm on Saturday. One of the men responsible was wearing gloves.

Paramedics later took the victim to Edinburgh Royal Infirmary.

Detective Constable Will Dickson said: "This was an unprovoked attack that has left the victim with serious injuries and we are keen to trace those responsible as soon as possible.

"I am eager to hear from anyone who may have seen three men acting suspiciously in the Dobbie's Road area on Saturday night, or who witnessed what happened, to come forward to help with our inquiries.

"Anyone with any information relevant to our investigation should contact Dalkeith CID via 101, quoting incident number 5281 of July 7, or report this anonymously to Crimestoppers on 0800 555 111."