(Telegraph) — Samantha Lewthwaite, the widow of one of the 7/7 bombers, is believed to have been behind an attack in Kenya that killed three people as they watched England during Euro 2012, according to reports.

The 28-year-old, whose husband Germaine Lindsay killed 26 people aboard a Piccadilly Line train, is being hunted through east Africa in connection with a foiled plot to attack hotels in Mombasa.

Kenyan police last night said that a woman matching Lewthwaite’s description had been seen near the Jericho Beer Garden shortly before a grenade attack on Sunday night which killed three and left 25 injured.

“We suspect Samantha Lewthwaite was actively involved in the terrorist attack on the club,” a Kenyan official told the Daily Mail.

They said that the mother-of-three from Aylesbury, Bucks., had been seen with two Arab men earlier in the evening, and that onlookers remembered her because it was unusual to see a white woman in Islamic dress.

The trio were apparently asking questions of the bar’s staff and were earlier seen near Catholic churches in Mombasa, a major tourist destination.