ROCHESTER — Rochester police said a 58-year-old woman has died after a large branch apparently crushed her as she trimmed trees.

Police were called to a medical emergency Saturday afternoon in southwest Rochester.

A homeowner said she had hired Dawn Zollman of Rochester, who had a small tree service business, to do some work. Police Lt. Mike Sadauskis said the homeowner discovered Zollman in the backyard, where a branch she had removed apparently had fallen on her and pinned her to a tree.

The limb was about three feet around and 25 to 30 feet long. There was no indication that Zollman had been in the tree or on a ladder.