Inna Lillahi Wa Inna Ilayhi Rajioun, may Allah swt provide sabr to the affected families and grant maghfira to the deceased ones.
To attack people who were there to say their juma prayers must be a new low for even these scums and sub humans.
They have done it in not so distant past, remember that they attacked a mosque on Friday prayers claiming that the attack was on some policemen attending the mosque? These animals are just proving their worth.