A PREGNANT jihadi bride killed herself, her unborn child and her three sons in a twisted suicide blast which also claimed the lives of Sri Lankan police officers.

Brainwashed Fatima Ibrahim detonated an explosive device at her home in a posh area of Colombo when SWAT cops arrived shortly after her extremist husband Ilham, 36, had killed dozens at the Shangri-La Hotel.

7 Ilham Ibrahim plotted with his pregnant wife and his brother to carry out terror attacks

Not only was burka-clad Fatima one of nine suicide bombers to take part in the Easter Sunday massacre - which claimed the lives of at least 359 people - police say she was a key player in the bomb plot.

Horrified locals revealed Fatima was expecting a baby - but could not believe she was willing to wipe out her family along with three police officers for her vile beliefs.

Ilham and Fatima were revealed to have been living a life of luxury in a swanky suburb as they plotted the outrage which ISIS has claimed responsibility for.

Police sources later confirmed Ilham’s 38-year-old brother Inshaf was the suicide bomber who blew up the Cinnamon Grand Hotel.

A master plan was recovered by detectives listed the target hotels and churches in the home they shared with dad Yoonus Ibrahim in Mihawila Gardens in smart Dematagoda.

Tubby grey-haired Yoonis - a spice business tycoon said to be worth millions and trustee at the local mosque - was among more than 40 suspected jihadis in custody.

In the atrocity at the Shangri-La, Ilham blew up British mum Anita Nicholson, 42, her son Alex, 14, and daughter Annabel, 11.

Seconds later, YouTube Islamist ranter Zahran Hashim detonated a second device at the plush hotel killing Brit teenager Daniel Linsey, 19, and his 15-year-old sister Amelie.

British fireman hero Billy Harrop, 56, and his doctor wife Sally Bradley died while having breakfast there in the Easter Sunday horror, which has claimed a total of 359 lives.

WHAT WE KNOW SO FAR:

At least 359 people killed and 500 injured after nine suicide bombers attacked three churches, four hotels and a block of flats in Sri Lanka

Thirty-nine foreigners were killed including eight Brits, 'several' Americans, one Dutch, one Chinese, two Turkish, three Danes and one Portuguese national

40 suspects have been arrested

Authorities name local Islamic terror group National Thowheeth Jama'ath as being responsible for the attacks saying they were helped by 'international network' of jihadis

ISIS claims the suicide bombers were 'soldiers of the Islamic State'

7 Anita Nicholson and her two children were having breakfast at the hotel when they were killed Credit: Facebook

ISIS video claims to show Sri Lanka attackers pledging allegiance to group's leader

Their son Gavin from Manchester was on holiday with them in Sri Lanka but survived as an eighth dead Briton remained unidentified.

Wealthy Inshaf lived with his wife and four children – a girl aged eight and boys aged six, four and two - in a £1.5million six-bed mansion in one Colombo’s most exclusive streets.

He was the boss of the thriving copper factory which employed 50 staff.

But the brothers appear to have been seduced online by the sick preachings of bearded IS Svengali Hashim.

Inshaf’s brother-in-law Ashkhan Alawdeen who worked in the prosperous family’s jewellery businesses said yesterday: "I’m in total shock.

“Inshaf said he was going to Zambia on Friday for work and went to the airport with my sister and their four children in a car.

"When he said goodbye he held her head and said: “Be strong”.

IN TOTAL SHOCK

“She thought it was a bit strange at the time but didn’t think anything of it because she assumed he was just going on a work trip.

"After that we all went to our parents’ home outside Colombo and were enjoying our weekend when this happened.

"My sister has broken down. This is not something we expect in our family.

"If I had any inkling about what he was planning to do I would have gone straight to the cops.

“I would have done anything to protect all those poor people. None of this should have happened.

"My brother in law is a psychopath. He deserves to be punished in hell. He has brought shame on our family.”

7 Ilham Ibrahim blew up a British family at the Shangri-La hotel in Colombo Credit: Getty - Contributor

Neighbours and fellow worshippers condemned the Ibrahim brothers and warped mum Fatima for staining Colombo’s Muslim community.

Eight masked jihadis involved in the Colombo horror were paraded online by IS in a line-up believed to include the Ibrahim brothers.

Muslim neighbour and mum-of-two Sajeethe Fakir-Mohamed, 28, said: “Our house shook when the bombs went off and the police grabbed my husband and arrested him when he went to see what was going on - just because he’s a Muslim.

“That is what happens when these people do the terrible things they do - innocent lives are tarnished.”

The total death toll reached 321 as authorities revealed that 45 children were among those slaughtered at three hotels, three churches and a guest house.

Detail emerged as police operations took the total number of arrests to more than 40 - amid fears more bombers are on the loose.

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Tension rose further in curfewed capital Colombo as it was reported that a lorry, a van and three motorcycles carrying explosives were roaming the city.

An improvised explosive device was reported to have been found on a motor cycle at the Kingsbury Hotel where jihadis launched one of the deadly attacks on Sunday.

And the normally bustling city remained under curfew as darkness fell amid fears terrorists were still at large.

7 YouTube Islamist ranter Zahran Hashim detonated a second device which killed Brit teenager Daniel Linsey and his sister Amelie

7 Daniel Linsey, 19, was on the last day of a three-week holiday when Islamist fanatics detonated eight bombs in Sri Lanka

7 More than 300 people were killed in the horrific blasts on Easter Sunday Credit: EPA

7 The terrorist that killed Anita and her two kids was also queuing for breakfast when he detonated the bomb Credit: Facebook

Australian survivor of the Sri Lanka church terror attack recalls the horror of finding his wife and daughter dead after suicide bomb attack