Sisters Blia Xiong and Mang Truong were driving to Lake Phalen in St. Paul for a walk a year ago when they interrupted a purse snatching and simultaneously solved a sex crime by accident.
The sisters tailed the thief in Truong's car as he ran and jumped into a getaway car. His victim chased him, too, screaming and waving her arms.
Xiong yelled at the man, finally persuading him to get out of the car and return the purse.
Xiong, 51, and Truong, 43, also caught a glimpse of the getaway driver. They identified him and the vehicle to police, who traced both to a sex crime that occurred earlier that September day in 2011.
"You solved two crimes in one day," St. Paul Chief Thomas Smith told the sisters Tuesday. "I want to thank you for that."
To underscore his gratitude, Smith gave them the St. Paul Police Chief's Award. During a ceremony at St. Paul police headquarters, he also recognized an officer who helped a suicidal man and two officers who entered a burning house.
"That day we didn't think," Xiong said. "We just do what anyone would do. You just hate to see innocent people hurting."
Truong, who is a 911 call taker at the Ramsey County Emergency Communications Center, said her training kicked into gear when she called 911 to report the crime.