A forensic scientist testified Monday in the trial of Brok Junkermeier -- the 19-year-old charged in the slaying of Willmar grandmother Lila Warwick -- that blood was found in her garage, kitchen, bathroom and basement, where the 79-year-old was found dead.

Blood also covered the mouse and mouse pad near the computer where prosecutors say Junkermeier forced Warwick to check her online bank account, then write him a check for $1,500 before he strangled and stabbed her.

Mark Patterson, a forensic scientist with the Minnesota Bureau of Criminal Apprehension, led jurors through video and photographs of the crime scene, Warwick's home on the east side of Willmar. A trail of blood droplets through the house mirrored the scene painted by prosecutors in opening statements Friday. They say Junkermeier ambushed Warwick in the garage with a 20-inch knife -- allegedly cutting her hands, before leading her inside.

She got blood on the first check, prosecutors said, so Junkermeier bandaged her hands before she wrote another. Investigators found bloodied paper towel in the kitchen and a box of bandages in the bathroom.

When prosecutors showed a close-up of Warwick's body, blood coming from her mouth, Junkermeier turned his head and lowered his gaze.

Deputies, a detective and a neighbor also took the stand Monday morning. Testimony will continue Monday afternoon.

Brok Junkermeier