A man stabbed 11 people at a Michigan Walmart Saturday, leaving six in critical condition. The suspect was tackled by shoppers and is now in custody, officials say.

TRAVERSE CITY, Mich. − Authorities on July 27 were still trying to determine why a 42-year-old man went on a stabbing rampage at a local Walmart, wounding 11 people and prompting chaos as patrons scrambled to exit the building.

Eleven people were injured in a mass stabbing at a Walmart store in Traverse City, Michigan, authorities said. CBS News' Cristian Benavides reports.