Gresham police expect a man to survive after getting shot in the upper chest in North Gresham Park.
It happened around 10 p.m. Tuesday at the park on Southeast 217th Avenue.
Jorge Hidalgo, 30, of Happy Valley told police he was walking alone when a man came up and demanded that he hand over his wallet and backpack.
The robber then shot Hidalgo while he was taking off the backpack, police said.
Officers said the gunman left the scene with Hidalgo's bag.
Police responded when Hidalgo walked into Mt. Hood Medical Center with a gunshot wound around 10:20 p.m.
Officers said they briefly talked to the victim before paramedics took him to Emanuel Hospital in an ambulance.
Gresham police are asking the public's help in identifying the robber.
Anyone with any information about the shooting or with information about the identity of the gunman is encouraged to call the Gresham Police Department.
The Gresham PoliceTip Line is 503-618-2719 (local) or 1-888-989-3505 (out of area).
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