MANKATO, Minn. – A man working the overnight shift at a Kwik Trip in Mankato was stabbed and killed. Dennis Vosika, 34, was pronounced dead of multiple knife wounds at the Mankato hospital. Police had been called to a disturbance about 3 a.m. Vosik was on the floor bleeding out, police said. A co-worker said the assailant was a frequent customer. It was not believed that Vosika and the assailant had any other connection. Surveillance video seemed to confirm the assailant as the 28-year-old man the coworker identified.