A BRITISH man is feared to be dead after he fell overboard a boat on Lisbon's River Tagus while on a stag do with friends.
A major sea and air rescue was launched after the 32-year-old went into the water just after midday yesterday.

The area around Alges is being searched after the party had set off from the main docks in Lisbon earlier that day.
Another 12 Brits and an Australian are thought to have been on the sailboat, which belonged to a firm which organises river excursions.
This company is believed to be called Nautisirius, but was unavailable for comment this morning.
The group were quizzed by police along with four crew members and the missing man's friends are staying at a hotel in central Lisbon.
It is unsure how the man came to fall from the boat, but police are looking at lines of enquiries which focus on the theory his may have lost his balance or become unwell before falling overboard.
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Lisbon Port commander Malaquias Domingues said the man disappeared immediately in the strong currents.
Maritime Police divers and a Portuguese Air Force helicopter were mobilised to aid the search for this missing man.
The search for the man, now feared dead, was suspended at nightfall last night but resumed at first light today.

The British man has not yet been named by officials.
Criminal investigators from Lisbon’s Maritime Police are leading the inquiry into the incident, which happened near to Lisbon Harbour’s Control Tower, which manages navigation inside the jurisdiction area of the Port of Lisbon Authority.
The group is thought to have been around an hour into their cruise when the Brit went overboard and went under the water.
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