A man complaining that impotence tablets he bought did not work has shot and injured a saleswoman at a north Moscow sex shop, Russian media report.

He drew a pistol and shot the woman at least once in the heat of a row over tablets he had apparently bought the day before, a police source said.

He entered the shop on Angarskaya St at around 1800 (1500 GMT) on Wednesday, complaining the tablets he had bought “didn’t help” and demanding both a refund and compensation, an unnamed Moscow police source told Interfax news agency.

When the saleswoman refused his demands and an argument erupted, he produced the gun and shot her once before fleeing from the shop.