An investigation is underway into allegations some Gardai have been writing off penalty points.

It is claimed that thousands of points have been quashed for motorists without any justification.

The Department of Justice says it is reviewing the allegations.

It has sought a report from the Garda Commissioner Martin Callinan who has appointed an Assistant Commissioner to examine the claims.

An interim report on the matter has been sent to the Justice Minister Alan Shatter.

While the Transport Minister Leo Varadkar has also been made aware of the allegations.

He says they will be investigated.