Several people have died trying to cross the English Channel from France, authorities say

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Several people died early Sunday during a failed attempt to cross the English Channel from northern France, French authorities said.

A rescue operation is underway, and survivors of the tragedy have been taken to the sports hall in the northern town of Ambleteuse, according to a statement from the prefecture of Pas-de-Calais region.

The incident Saturday occurred nearly two weeks after a boat carrying migrants ripped apart in the English Channel as they attempted to reach Britain from northern France, plunging dozens into the treacherous waterway and leaving 13 dead, officials said.

On Saturday, French coast guard and navy vessels rescued 200 people from the treacherous waters in the Pas-de-Calais area, according to a report sent by French maritime authorities in charge of the Channel and the North Sea.

They said they observed 18 attempts of boat departures from France to Britain on Saturday.

Before Saturday's accident, at least 43 migrants had died or gone missing while trying to cross to the U.K. this year, according to the International Organization for Migration.

In July, four migrants died while attempting the crossing on an inflatable boat that capsized and punctured. Five others, including a child, died in another attempt in April. Five dead were recovered from the sea or found washed up along a beach after a migrant boat ran into difficulties in the dark and winter cold of January.