Prosecutors said Petersen posed as a delivery driver for Amazon on Dec. 29, shortly after 8 p.m. Once the victim opened the door, he pushed his way into her apartment. After he commented on how heavy the package was, the victim instructed him where he should place it. After he set the package down, he began to make advances toward the victim, but when she told him to leave, he grabbed her buttocks and breast, and pushed her into a wall, prosecutors said.