Shooting at Walmart in Washington leaves 5 people injured

An employee, a 74-year-old customer, and three 19-year-olds were injured

Authorities said a customer and an employee at a Walmart in Mount Vernon, Washington, along with three 19-year-old men, were injured in the shooting at the store.

The Seattle Times reported that police were called to report gunfire in the building just before 10 p.m. Sunday.

Police investigators believe the shooting took place after a group of men entered the shop and got into an "argument" with a group of other men already inside the shop, police said.

According to police, three people were taken to Skagit Valley Hospital by paramedics, with the other two arriving in private vehicles.

Police said they did not know the current condition of the injured.