A central Iowa couple is suing the restaurant where they held their rehearsal dinner the night before their November 2006 wedding.

Andrew and Sara Slagle of Clive held their reception at Trostel's Greenbriar Restaurant and Bar in Johnston. The couple claims they along with their 20 guests became ill after eating at the restaurant.

A Polk County Health Department investigation concluded the man who prepared the salad served at dinner that night had stomach flu. The official cause was determined to be norovirus.

A total of 71 people, including those among the Slagle reception, became sick. Restaurant owner Paul Trostel said his insurance company has settled with many of the customers who fell ill.

"I feel very terrible about this situation that happened once in 20 years," he said. "It could have happened to any restaurant, but unfortunately it happened at the Greenbriar."

In the lawsuit filed this week, the Slagles along with their fathers, want Trostel to pay for a do-over reception and medical bills. That's according to their attorney Roxanne Conlin of Des Moines.

The lawsuit does not detail an amount of money they seek.