Police are disputing a female demonstrator’s claims that hired security staff physically assaulted her during a peaceful protest of a planned McDonald’s restaurant in Tecoma.

The woman, 50-year-old Janine Watson, was one of four protesters who had camped on the roof of the future fast-food site in the Dandenong Ranges to thwart the building’s planned demolition.

Tecoma protester Janine Watson shows off her injuries at the McDonald's demonstration site, where she says she was pulled off a roof by a security guard. Credit:Angela Wylie

Ms Watson alleged that members of the hired security staff forcibly pulled her from the roof about 9.45pm on Wednesday, leaving her with fractured fingers and severe bruising.

However, police said Ms Watson suffered an abrasion to her finger after falling from the building.