BLOOMINGTON (AP) -  Police are monitoring the office of a suburban Minneapolis dentist who has come under fire for killing a protected lion in Zimbabwe.

Bloomington Deputy Police Chief Mike Hartley says his department is putting plans together to manage any protests Wednesday at Walter Palmer's dental office.

Hartley says an extra patrol monitored Palmer's office overnight and a high-visibility camera installed to deter and record any criminal activity detected no such wrongdoing.

Palmer was with professional guides when he killed a beloved lion in Africa. Palmer says he didn't know the lion was protected and he relied on local guides to ensure the hunt was legal.

The lion's death sparked outrage on social media, and protests are planned at Palmer's office. By Wednesday morning, a small pile of stuffed animals, including lions and a monkey, was outside the front door of the office, which appeared to be closed.

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