Flowers and a card believed to have been left by the family of soldier Drummer Lee Rigby, close to the scene where he was murdered near to Woolwich Barracks on Wednesday, in Woolwich south east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. See PA story POLICE Woolwich. Photo credit should read: John Stillwell/PA Wire

A balloon, flowers and a card tied to a street sign believed to have been left by the family of soldier Drummer Lee Rigby, close to the scene where he was murdered near to Woolwich Barracks on Wednesday, in Woolwich south east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. See PA story POLICE Woolwich. Photo credit should read: John Stillwell/PA Wire

People leave flowers at the scene at the junction of Artillery Place and John Wilson Street which has become a shrine to Drummer Lee Rigby

The scene at the junction of Artillery Place and John Wilson Street which has become a shrine to Drummer Lee Rigby

Caroline McNiffe writes a message in a book of condolence to Drummer Lee Rigby in Woolwich Town Hall, south east London

A pair of Army boots among the flowers at the area which has become a shrine to Drummer Lee Rigby

LONDON, ENGLAND - MAY 26: People embrace outside the Royal Artillery Barracks, close to where Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was killed, on May 26, 2013 in London, England. Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was murdered by suspected Islamists near London's Woolwich Army Barracks. His family visited the scene of his murder today and left floral tributes whilst it was confirmed by the Foreign Office that one of the suspects, Michael Adebolajo, was arrested in Kenya in 2010. (Photo by Matthew Lloyd/Getty Images)

Police at the scene in Woolwich following the attack

Lyn Rigby, right, the mother of murdered soldier Lee Rigby, is supported by her daughter Sara McClure while the family reads a statement

Rebecca Rigby, the wife of murdered soldier Lee Rigby, wipes her eyes during a family press conference in Bury, Greater Manchester

A teddy bear bought by murdered soldier Lee Rigby for his son, Jack, sits alongside a family photograph after a family statement was read out by his stepfather Ian Rigby, at a press conference at the Regimental HQ of his unit, the Royal Regiment of Fusiliers at Bury in Greater Manchester

Lyn Rigby, mother of Drummer Lee Rigby, holding a teddy bear joins other family members as they look at floral tributes outside Woolwich Barracks as they visited the scene of his murder in Woolwich, south-east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. They laid flowers at the Woolwich Barracks where the 25-year-old soldier with the Royal Regiment of Fusiliers was based, and where hundreds of floral tributes have already been left by wellwishers. See PA story POLICE Woolwich. Photo credit should read: John Stillwell/PA Wire

Lyn Rigby, mother of Drummer Lee Rigby, holding a teddy bear joins other family members as they look at floral tributes outside Woolwich Barracks as they visited the scene of his murder in Woolwich, south-east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. They laid flowers at the Woolwich Barracks where the 25-year-old soldier with the Royal Regiment of Fusiliers was based, and where hundreds of floral tributes have already been left by wellwishers. See PA story POLICE Woolwich. Photo credit should read: John Stillwell/PA Wire

Drummer Lee Rigby's widow Rebecca, clutching a Peppa Pig soft toy, joins other family members as they look at floral tributes outside Woolwich Barracks as they visited the scene of his murder in Woolwich, south-east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. They laid flowers at the Woolwich Barracks where the 25-year-old soldier with the Royal Regiment of Fusiliers was based, and where hundreds of floral tributes have already been left by wellwishers. See PA story POLICE Woolwich. Photo credit should read:Jennifer Cockerill/PA Wire

Flowers and a card tied to a wreath believed to have been left by the family of soldier Drummer Lee Rigby, close to the scene where he was murdered near to Woolwich Barracks on Wednesday, in Woolwich south east London. PRESS ASSOCIATION Photo. Picture date: Sunday May 26, 2013. See PA story POLICE Woolwich. Photo credit should read: John Stillwell/PA Wire

LONDON, ENGLAND - MAY 26: A man holds a wreath as he walks with a group of people march from the scene where Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was killed, to the Royal Artillery Barracks in a show of support on May 26, 2013 in London, England. Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was murdered by suspected Islamists near London's Woolwich Army Barracks. His family visited the scene of his murder today and left floral tributes whilst it was confirmed by the Foreign Office that one of the suspects, Michael Adebolajo, was arrested in Kenya in 2010. (Photo by Matthew Lloyd/Getty Images)

LONDON, ENGLAND - MAY 26: Floral tributes left by family members, close to the scene where Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was killed, on May 26, 2013 in London, England. Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was murdered by suspected Islamists near London's Woolwich Army Barracks. His family visited the scene of his murder today and left floral tributes whilst it was confirmed by the Foreign Office that one of the suspects, Michael Adebolajo, was arrested in Kenya in 2010. (Photo by Matthew Lloyd/Getty Images)

LONDON, ENGLAND - MAY 26: A group of people and soldiers gather outside the Royal Artillery Barracks, close to where Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was killed, on May 26, 2013 in London, England. Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was murdered by suspected Islamists near London's Woolwich Army Barracks. His family visited the scene of his murder today and left floral tributes whilst it was confirmed by the Foreign Office that one of the suspects, Michael Adebolajo, was arrested in Kenya in 2010. (Photo by Matthew Lloyd/Getty Images)

LONDON, ENGLAND - MAY 26: Floral tributes outside the Royal Artillery Barracks, close to where Drummer Lee Rigby of the 2nd Battalion the Royal Regiment of Fusiliers was killed

Lee Rigby, 25, from the 2nd Battalion, Royal Regiment of Fusiliers, was hacked to death in Woolwich (MoD/PA)

Police have been deployed to guard Morden mosque after around five thousand Muslims gathered there on Friday to condemn the murder of 25-year-old soldier Lee Rigby in Woolwich, south-east London.

The gathering of British Muslims from across the country took place at Western Europe's largest mosque in Surrey.

Worshippers offered prayers for Drummer Rigby and his family and expressed solidarity against extremism.

National president of the Ahmadiyya Muslim Association UK Rafiq Hayat said: "We stand united with the rest of the country in sharing the deep sorrow and pain following the horrific senseless attack on Wednesday.

"Our thoughts and prayers are with the family of Drummer Lee Rigby. We hope that the perpetrators of this crime, that is based on a twisted and warped ideology, are brought to justice.

"Islam is a religion of compassion and peace; a religion which considers the killing of an individual akin to killing the whole of humankind. Such acts of violence, therefore, have absolutely no place in Islam and can never be justified."

Similar condemnation was echoed in mosques throughout the UK.

Police have since deployed officers to guard Morden mosque after threats appeared on social media sites, Facebook and Twitter, calling for it to be burnt to the ground. The mosque was targeted on a Facebook page named 'True British Patriots'.

Users on the page referred to Muslims as “f****** muzzies” and called for mosques in Morden, Watford and Braintree in Essex to be burned to the ground.

Drummer Rigby, from Langley, in Greater Manchester, was from 2nd Battalion, The Royal Regiment of Fusiliers, had served in Afghanistan and was attached to the Regimental Recruiting Team when he was hacked to death on Wednesday afternoon.

Two suspects were shot and arrested at the scene and remain in police custody.

Meanwhile nearly 100 senior British imams have signed a letter condemning the Woolwich attack.

The letter read: "We share the absolute horror felt by the rest of British society at the sick and barbaric crime that was committed in the name of our religion. We condemn this heinous atrocity in the strongest possible terms.

"It is a senseless act of pure depravity worthy of nothing but contempt. There can be no justification for murder."

The document was signed by 94 imams, including Shaykh Ibrahim Mogra, assistant secretary general of the Muslim Council of Britain.

It said that imams and Muslim organisations had spoken out "over the evils of terrorism" for many years, but recent events showed they cannot afford to be complacent.

The imams also criticised some incidents which occurred in the aftermath of the killing.

"Already we have seen extremists seeking to capitalise upon Wednesday's terrible act. There have been several attacks reported against mosques and Muslim citizens," they wrote.

"The hate-fuelled individuals behind such attacks wish to polarise and tear apart our great country for their own sick ends. They should be isolated and subject to the full force of the law."

The letter went on: "We the British people are not so easily fooled; nor are we so easily divided. The overwhelming majority of the Muslim community stands united with the rest of society in condemning this awful tragedy."

Tensions remain high across the UK following the murder. Police have vowed to take a zero tolerance approach to religious or racially-aggravated attacks.

Belfast Telegraph