Peter Arthur Larsen was a 51-year-old Beloit Police Department patrol officer wounded during a January 4, 1985 shooting in Beloit, Wisconsin. Court testimony and contemporaneous reports describe Hatch approaching a vehicle where Larsen encountered the scene; Hatch shot Larsen twice in the head, then shot April Rankins twice and then shot himself. All three survived the initial shooting and received emergency care.

Larsen never recovered from the head wounds; they left him quadriplegic and in a semi-comatose condition. He lived under the care and guardianship of his wife, Pamela, with significant medical and home-care funding issues noted. Larsen died on November 15, 1998, and his death was officially associated with the injuries sustained in the January 1985 attack. David Hatch was convicted of kidnapping while armed, reckless use of a weapon, and two counts of attempted first-degree murder and received a 77-year sentence.