Prime Minister Justin Trudeau offered his condolences to those affected by a bombing in a Pakistan park that killed dozens of people Sunday.

Police officials in Lahore, an eastern Pakistani city bordering India, said that Christian families were celebrating Easter in Gulshan-e-Iqbal park when an explosion was set off near a children's play area.

At least 65 people are dead and at least 300 wounded, according to a spokesman for Lahore rescue administration.

A Pakistani Taliban offshoot group claimed responsibility for the blast, which specifically targeted Christians on the sacred holiday.

Trudeau offered his prayers for the victims via Twitter.

U.S. officials called the attack “appalling” and “cowardly.”

“We will continue to work with our partners in Pakistan and across the region, as together we will be unyielding in our efforts to root out the scourge of terrorism,” said National Security spokesperson Ned Price.

The deadly attack comes days after at least 31 people were killed in bombings at the Brussels airport and a city subway.