LOVELAND, Colo. —  A man trimming trees was killed after he was apparently pulled into a wood chipper, police said.

Police Sgt. Rae Bontz said the tree-service employee died Wednesday while he and a co-worker were cutting branches at a Loveland residence.

Bontz described the death as an industrial accident but released no other details.

"It appears he was pulled into the chipper," Bontz said. "We are still investigating."

His partner, who was cutting branches from a bucket on a hydraulic lift, ran to the house where they were working, and a woman living there called 911. The victim was pronounced dead at the scene.

Police did not release either man's name. Police Chief Luke Hecker said the victim was experienced at his work but did not release any other information.

The man was pronounced dead at the scene.

The Larimer County coroner and the federal Occupational Safety and Health Administration were also investigating.