Wiltshire Police
The Argentinian striker died in a plane crash in January.
Mum-of-four Linda Razzell vanished nearly two decades ago.
He attempted a smash-and-grab raid.
Anna Shapiro says her fears were genuine.
Both victims have been discharged from hospital, having tested negative for poison.
Witnesses say they are Russians.
A 29-year-old man from Southampton died in the incident.
Police said there is no further risk to the public.
The helicopter was grounded while tests were carried out.