One eyewitness said the man who ran off was shouting in Spanish, as he was chased away from the scene. The man, who said he wished to remain anonymous, was out for a walk with his girlfriend across the bridge from the Leigh Woods side, when he saw a commotion ahead.
"There were two suitcases, one left on the bridge with what appeared to be blood leaking from it, the other case was on the road just after the bridge on the Leigh Woods side," he said.
"There was blood on the floor along the bridge. The man who had the cases ran from the bridge staff and I saw him being chased by a member of the public on a bike - he was shouting something in Spanish.
"The cyclist followed the man, who was wearing a dark or black clothing, and was seen running down Burwalls," he added.
Pictures form the scene show a train of blood close to the bridge's viewing area
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