Russian grocery retailer O'Key said today that its were hit by reduced traffic following the collapse of a roof in one of its St Petersburg stores.

The retailer said today (8 April) that like-for-like sales for the quarter ended 31 March slowed to 2.3% against 6.6% growth in the first quarter of the previous year.

It said the number of transactions were down 2.8% for the quarter on a like-for-like basis, against 4.5% growth in the same period of 2009.

During the quarter, the retailer said it closed its St Petersberg stores for several days for safety checks following a deadly roof collapse in one of its stores.

O'Key said that on reopening the stores, it registered a decline in traffic, adding that it was "quickly able to reverse the situation", with February and March showing a "steady recovery in the number of purchase". However, it said that the accident had a "significant impact on our LFL traffic results for the quarter".

Net retail revenue was up 11.6% to RUB20.3bn (US$723.1m), which it attributed largely to an increase in selling space.

Shares in the retailer were down 1.8% today to US$12.26 a share at 12:08 today.