ISIS claims responsibility for Sri Lanka attacks

ISIS claimed responsibility on Tuesday for the Easter Sunday bombings in Sri Lanka that killed at least 321 people and injured more than 500, but did not immediately offer proof for its claim, the AP reports.

The big picture: Sri Lankan officials said earlier that they believed the attacks were a retaliation against the Christchurch mosque shootings in New Zealand in March, which killed 50 and injured 42.

Go deeper: Sri Lankan attacks underscore continued threat of jihadist groups