Members of the Air Miles rewards program who collect cash miles have been notified by email that criminals may have stolen their points.

Air Miles says a small number of in-store transactions have occurred in which stolen cash miles were used to buy goods.

Air Miles spokesperson Rachael Montgomery says although the cash miles were stolen, personal information was not compromised.

The cash mile option for in-store purchases has temporarily been suspended, but members can still access their cash miles at the company’s website to redeem for e-vouchers.

The alert comes a few weeks after Air Miles sent a note to its members apologizing for the controversy caused last year over a decision to expire Air Miles points after five years, a decision which was later reversed.