Rome police say a suspect has been detained in the slaying of a 37-year-old woman whose body was found May 2 on a Tiber River walkway near Sisto Bridge.

Police say Imen Chatbouri, who was born in Tunisia and in the past competed for Italy in amateur javelin competitions, was thrown from the Rome bridge.

Investigators obtained video footage showing a man grabbing Chatbouri by the ankles as she leaned on a parapet before dawn that day and tossing her over the barrier.

Italian broadcaster RaiNews24 reports that the Romanian suspect arrested Saturday says he is not the man in the video.

Italian media say Chatbouri and the detained man had been together the night before her body was found and other surveillance cameras captured him following her to the bridge.