Thousands of mourners attended a memorial service for the victims of the Leicester house fire in which a mother and her three children were killed last month.
Shehnila Taufiq, her daughter Zainab, and sons Bilal and Jamil died in their home on 13th September.
ITV News' Rupert Evelyn reports:
The father said he was not angry, but that he would "continue the work that my wife and my children have left for me."
Seven men have been charged with murder.
More top news
The suspect, 35-year-old Willie Corey Godbolt, has been arrested and was being treated for a gunshot wound in hospital.
Mohanna Abdhou, known as Montana, was out with friends when two attackers cycled up to them and opened fire in Brent, north-west London.
The US president tweeted that Mrs May gave him "full details" of the incident during talks while he attended summits in Europe.