Rewrite the news report in the passive.

Report:
Mrs Harris, a local resident, has spotted a mysterious creature in the town park. She says the creature resembles a huge ape, and is sure that it is the Yeti. Yesterday, the authorities called in a team of scientists to investigate the claim. After some investigations, the scientists solved the mystery. What the woman saw was not the Yeti, but a big orangutan they are keeping at the local zoo. The animal had escaped a few days earlier and the zoo workers had even made an announcement warning people of the fact. Mrs Harris had obviously not heard the announcement.

A mysterious creature has been spotted in the town park by Mrs Harris, a local resident...