Three civilian security guards have been arrested over the death of an Angolan man who died while they were deporting him from the UK.
Jimmy Mubenga, 46, collapsed on a plane at Heathrow Airport while being escorted by the three men as he waited to be taken back to his homeland last week.
The trio, aged 35, 48 and 49, were arrested at a west London police station and have been released on police bail to December pending further inquiries.
A Scotland Yard spokesman said: "The deceased was being deported from the UK under escort by civilian security guards. Inquiries continue to establish the full circumstances of the incident.
"The death is being treated as unexplained at this stage."
Mr Mubenga became unwell while under the escort of the guards on a British Airways flight that was preparing to leave Heathrow for Angola shortly before 8.30pm on Tuesday last week.
He was taken to Hillingdon Hospital, in Uxbridge, but pronounced dead shortly after arrival.
Post mortem examinations to find out how Mr Mubenga died have so far proved inconclusive. Further tests will now take place.
