Seven minutes after Sarah Anne Wierstad boarded a bus in downtown St. Paul Sunday night, she stepped off at the Beaumont and Burr stop, a block from her apartment on the city's East Side.
Moments later, she lay dead on the sidewalk, shot through the heart.
Details of her killing were spelled out in a Ramsey County criminal complaint filed Thursday alleging that Alvin Rudolph Bell, 24, fired four rounds, hitting the young mother twice. The second-degree murder charge, which did not identify a motive, said investigators found Bell's fingerprints on the kitchen window of her apartment.
Wierstad's mother and a close friend said Thursday that they were convinced Wierstad interrupted a burglary before being fatally shot. She and Bell, of St. Paul, had "no known prior connection," said Dennis Gerhardstein a spokesman for the Ramsey County attorney's office.
According to the complaint:
A witness heard shots, saw "fire coming out of the gun," and hurried to help Wierstad as she lay dying. The witness "used a blanket provided by neighbors to apply pressure" to Wierstad's chest wound until police arrived.
The complaint continued:
Bell jumped into a car that sped away and later used Wierstad's credit card to buy gas in south Minneapolis. Police found his fingerprints on a window where the screen was cut and evidence that someone had been inside her apartment on Bedford Street. Police also found a "set of keys that seemed out of place," dropped on the floor near the front door.