Wisconsin Trooper Killed in Single-Car Rollover Wreck

A Wisconsin State Patrol trooper was killed in an on-duty rollover wreck on Interstate 90 Tuesday morning, officials said. 

The Sauk County Sheriff's Office told Channel 3000 that first responders were sent to the crash on east I-90 at about 4:30 a.m. near mile marker 89. 

Trooper Anthony Borostowski was headed east on I-90-94 when he lost control of his patrol car, according to the report. The car entered the south ditch and struck a tree.