“I spoke on the phone this evening with @LdnOntMayor and @NTahir2015 about the hateful and heinous attack that took place in London, Ontario yesterday. I let them know we’ll continue to use every tool we have to combat Islamophobia - and we’ll be here for those who are grieving,” Trudeau tweeted.

On Sunday, four members of a Muslim family were killed in a premeditated truck attack.

The attack took place in London, Ontario province. The victims were identified as Salman Afzaal, 46; his wife, Madiha, 44; their 15-year-old daughter, Yumna; and Mr. Afzaal’s 74-year-old mother.

A boy aged nine, the family's only survivor, is in hospital with serious injuries.