People gathered and lighted candles on April 21, 2019 in Karachi, Pakistan, to mourn victims of eight blasts that hit churches and hotels on Easter Sunday in Sri Lanka. /AFP Photo: RIZWAN TABASSUM

The death toll from serial explosions has risen to 290, with over 500 others injured, Reuters reported on Monday, citing local police spokesman. /AP Photo

Nationals from China, the U.S., Denmark, Japan, Pakistan, Morocco, India, and Bangladesh are among the victims, according to local media on Sunday. /AP Photo

The Eiffel Tower went dark at midnight to pay tribute to the victims of the Sri Lanka bomb attacks during the day on Easter Day. /AFP Photo: ZAKARIA ABDELKAFI