Former British Prime Minister Margaret Thatcher has died of a stroke, several news organizations are reporting.

The BBC said Thatcher, 87, suffered a stroke.

Thatcher was Britain's first and only female prime minister, serving from 1979 to 1990. As head of the Conservative Party and a staunch ally of President Ronald Reagan, she was called the "Iron Lady" for her political toughness.

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A migrant farmworker harvests Vidalia onions at a farm in Collins, in 2011. A coalition of farmworkers, including one based in Georgia, filed suit last month in federal court arguing that cuts to H-2A wages will trigger a cut in the pay and standard of living of U.S. agricultural workers. (Bita Honarvar/AJC)

Credit: Bita Honarvar