Panaji: The mother of a British teenager who was found dead on a beach in southern India has written a letter to the Indian prime minister Wednesday demanding justice and saying that local police tried to cover up the crime.

The bruised and partially clothed body of Scarlett Keeling was found on a Goan beach in February.

Police initially said Keeling drowned because she was drunk, but pressure from her family forced a second autopsy that indicated she may have been raped and murdered.

In the letter made available to reporters, Keeling's mother Fiona MacKeown alleges that drug dealers, politicians and police had tried to cover her daughter's killing as a drowning death.