LETHBRIDGE — Police in Lethbridge have a man in custody in connection with an incident Tuesday at a Shoppers Drug Mart where a customer pointed a gun at staff after he was unhappy with the service.

Officers were called to the pharmacy in the 100 block of Columbia Boulevard West shortly before 6:30 p.m. Police say the customer, identified as 22-year-old David Guenther Krahn, left the store after being unhappy with the service he received and returned a short while later brandishing a gun.

He then left before police arrived. No one was injured.

Police identified Krahn from video surveillance. They say he is known to police.

A warrant was issued for Krahn's arrest. A tip from the public led to his arrest Wednesday afternoon.

has been issued for his arrest. Krahn faces several charges related to possession of a firearm. Police also seized a gun, which police believe was used in the Shoppers Drug Mart incident.