A 50-year-old man has been injured in a violent home invasion at Jervois.

Three men wearing masks and dark clothing allegedly forced their way into a property on Jervois Road at 3.30am on Wednesday.

They assaulted the man with pieces of timber and demanded that he give them guns.

When he refused, they took the keys to several vehicles and left.

The man was later treated for head and arm injuries at the Murray Bridge hospital.

Police are investigating the incident.

• Anyone with information that may help should contact Crime Stoppers on 1800 333 000 or at www.crimestopperssa.com.au.

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