PELLA, Iowa -

Authorities say three people were killed and two injured when a pickup truck rammed through a front door at a Wal-Mart store in the southern Iowa city of Pella.

Police Chief Robert Bokinsky confirmed the fatalities and said that the truck driver was one of the two people injured in the crash just before 10. a.m. Thursday. Bokinsky says the crash appears to have been accidental.

The names of those killed and injured have not been released. It's unclear whether they were customers, store employees or a mixture. The store was evacuated after the crash.

Wal-Mart management said in a statement: "We're heartbroken by what appears to be a tragic accident."

Pella is 38 miles southeast of Des Moines.