British spies closing in on British White Widow terrorist Samantha Lewthwaite

- Samantha Lewthwaite, 35, from Aylesbury, is the world's most wanted woman

- Mother-of-four dubbed the 'White Widow' due to husband 7/7 suicide bomber

- She has recruited dozens of terrorists and may be behind as many as 400 deaths

- Now British spies says the 'net is closing in' on Lewthwaite after seven years

The world's most wanted woman, a British mother responsible for the deaths of as many as 400 people, is in hiding in Yemen, British security services believe.

Spies have made a crucial breakthrough in the search for 'White Widow' Samantha Lewthwaite, 35, having received new intelligence she is hiding out in the Middle Eastern country.

A source close to the seven-year hunt for Lewthwaite, the widow of one of the 7/7 suicide bombers, told the : 'She remains our number one target and we believe the net is finally closing in. We will get her.'

The killer, who is the daughter of a British soldier, is believed to be under the protection of fighters from the militant network Al-Shabaab.

She is understood to have relocated to war-torn Yemen after being linked to atrocities in Kenya and Somalia in Africa. Intelligence operatives believe she recent visited Dubai and they fear she may be plotting further terror attacks, including strikes on London.

The latest intelligence is said to have been gathered after an MI6 officer in Kenyan capital Nairobi recruited a source with close links to the 35-year-old.

The information, described as 'credible', is understood tips that she already has a range of contacts in Yemen, particularly in the former British colony of Aden and the major seaport of Mukalla.

Interpol issued a Red Notice arrest warrant for her after she was linked to the 2013 Westgate Mall attack in Kenya, which left five Brits and 66 other people dead, and around 200 injured.

Security services believe her other atrocities include the slaughter of 148 people by gunmen at a university in 2015.

Dailymail