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Muslim leaders have condemned terror attacks across London ahead of an event billed as the "largest Islamic convention in the UK".

Some 30,000 Muslims from 100 countries will gather for the three day event, known as Jalsa Salana, in Hampshire.

Caliph Hazrat Mirza Masroor Ahmad, chief of the Ahmadiyya Muslim Community which has organised the event, renounced terrorists who launched atrocities on London Bridge and at Westminster.

He said attackers Khalid Masood, Khuram Butt, Rachid Redouane and Youssef Zaghba had “no knowledge of Islam”.

The Caliph said: “Recently, terrorist organisations have started to regularly commit the most barbaric atrocities in Western countries by taking the lives of innocent people.

London Terror Attack Floral Tributes at Westminster - 27 March 2017 12 show all London Terror Attack Floral Tributes at Westminster - 27 March 2017 1/12 Hero MP Tobias Ellwood looks over the flowers left in tribute to the victims of the attack in Westminster Jeremy Selwyn 2/12 He paused at the solemn scene in Parliament Square this morning Jeremy Selwyn 3/12 Flowers from Prime Minister Theresa May amongst tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Jeremy Selwyn 4/12 Two school children look at the floral tributes Jeremy Selwyn 5/12 A woman observes the flowers pinned to the Carriage Gates where the attack took place Jeremy Selwyn 6/12 Outpouring of support: flowers at the scene of the attack in Westminster Jeremy Selwyn 7/12 Three police officers stand in front of the floral tributes Jeremy Selwyn 8/12 A female police officer pays her respects at the scene Jeremy Selwyn 9/12 A woman in jogging attire stops to remember the victims of the attack Jeremy Selwyn 10/12 A man looks at floral tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Lauren Hurley/PA 11/12 Police officers stand in front of the floral tributes Jeremy Selwyn 12/12 Labour MP Hilary Benn passes floral tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Lauren Hurley/PA 1/12 Hero MP Tobias Ellwood looks over the flowers left in tribute to the victims of the attack in Westminster Jeremy Selwyn 2/12 He paused at the solemn scene in Parliament Square this morning Jeremy Selwyn 3/12 Flowers from Prime Minister Theresa May amongst tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Jeremy Selwyn 4/12 Two school children look at the floral tributes Jeremy Selwyn 5/12 A woman observes the flowers pinned to the Carriage Gates where the attack took place Jeremy Selwyn 6/12 Outpouring of support: flowers at the scene of the attack in Westminster Jeremy Selwyn 7/12 Three police officers stand in front of the floral tributes Jeremy Selwyn 8/12 A female police officer pays her respects at the scene Jeremy Selwyn 9/12 A woman in jogging attire stops to remember the victims of the attack Jeremy Selwyn 10/12 A man looks at floral tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Lauren Hurley/PA 11/12 Police officers stand in front of the floral tributes Jeremy Selwyn 12/12 Labour MP Hilary Benn passes floral tributes to the victims of the Westminster terrorist attack outside the Palace of Westminster Lauren Hurley/PA

“The terrorists have no knowledge of Islam because otherwise they would realise that the Holy Prophet of Islam forbade the murder of innocent people under any circumstances and even during a state of war.”

The statement comes months after Masood ploughed into pedestrians on Westminster Bridge before fatally stabbing PC Keith Palmer to death outside the gates of Westminster in March.

In June, Butt, Redouane and Zaghba mowed down Saturday night revellers on London Bridge before launching a knife attack on nearby Borough Market.

Vigil for London Bridge terror attack 12 show all Vigil for London Bridge terror attack 1/12 Hundreds gather during a vigil in Potters Fields for the victims of the June 3rd terror attacks Getty Images 2/12 People attend a vigil for victims of Saturday's attack in London Bridge, at Potter's Field Park AP 3/12 Hundreds gather during a vigil in Potters Fields for the victims of the June 3rd terror attacks Getty Images 4/12 Shadow Home Secretary Diane Abbott, Mayor of London Sadiq Khan and Home Secretary Amber Rudd take part in a vigil for the victims of the London Bridge terror attacks Getty Images 5/12 Mayor of London Sadiq Khan, Home Secretary Amber Rudd and Shadow Home Secretary Diane Abbott with members of the public observing a minute's silence PA 6/12 People gather in Potters Field Park during an event for the victims of the terror attack REUTERS 7/12 People at a vigil in Potters Fields Park, central London in honour of the London Bridge terror attack victims PA 8/12 People take part in a vigil for victims of the London Bridge terror attacks by the City Hall EPA 9/12 Floral tributes were set down during a vigil outside City Hall EPA 10/12 ople attend a vigil to remember the victims of the attack on London Bridge and Borough Market REUTERS 11/12 Pupils from Eden Girls' School in Waltham Forest take part in a vigil in memory of those killed in the recent terror attacks in London Getty Images 12/12 People lay flowers after a vigil for victims of Saturday's attack in London Bridge, AP 1/12 Hundreds gather during a vigil in Potters Fields for the victims of the June 3rd terror attacks Getty Images 2/12 People attend a vigil for victims of Saturday's attack in London Bridge, at Potter's Field Park AP 3/12 Hundreds gather during a vigil in Potters Fields for the victims of the June 3rd terror attacks Getty Images 4/12 Shadow Home Secretary Diane Abbott, Mayor of London Sadiq Khan and Home Secretary Amber Rudd take part in a vigil for the victims of the London Bridge terror attacks Getty Images 5/12 Mayor of London Sadiq Khan, Home Secretary Amber Rudd and Shadow Home Secretary Diane Abbott with members of the public observing a minute's silence PA 6/12 People gather in Potters Field Park during an event for the victims of the terror attack REUTERS 7/12 People at a vigil in Potters Fields Park, central London in honour of the London Bridge terror attack victims PA 8/12 People take part in a vigil for victims of the London Bridge terror attacks by the City Hall EPA 9/12 Floral tributes were set down during a vigil outside City Hall EPA 10/12 ople attend a vigil to remember the victims of the attack on London Bridge and Borough Market REUTERS 11/12 Pupils from Eden Girls' School in Waltham Forest take part in a vigil in memory of those killed in the recent terror attacks in London Getty Images 12/12 People lay flowers after a vigil for victims of Saturday's attack in London Bridge, AP

The Islamic State claimed responsibility for both atrocities which, combined, left 13 innocent victims dead.

The convention will take place across 200 acre site at a Hampshire farm between July 28 and 30.

It will see worshippers form a human chain to touch the Caliph’s hand.