'White Widow' shot dead by sniper in Russia: reports

A female British terror suspect dubbed the 'White Widow' has been killed in the Ukraine, according to reports.

Samantha Lewthwaite, 30, was shot dead by a Russian sniper two weeks ago, reports non-governmental Moscow news agency Regnum.

Lewthwaite, who was married to 7/7 suicide bomber Germaine Lindsay, 19, was on the UK's most wanted list and was last reported to have taken up the fight with ISIS in Syria.

After Lindsay's death in 2005, Lewthwaite remarried a British-born Muslim man who was reportedly killed in a shoot-out in Somalia in 2013, reports the New York Daily News.

Around the time of his death, Lewthwaite is believed to have masterminded the September 2013 slaughter at the Nairobi Westgate Mall where terrorists systematically killed 67 people. Many witnesses reported seeing a white woman among the attackers.

The claim is yet to be verified.