Sydney Opera House Lights Up In Support Of Sri Lanka

UPDATE: The colours of the Sri Lankan flag have been projected onto the iconic sails of the Sydney Opera House as a show of support following the Easter Sunday terror attacks.

Sydney will pay tribute to the victims of Sri Lanka's devastating Easter attacks, Premier Gladys Berejiklian has announced.

On Wednesday, police confirmed the death toll from a series of coordinated bomb attacks on Sri Lankan hotels and churches had risen to 359.

The attacks, several of which occurred while crowds gathered in churches for Easter Sunday mass have been condemned by leaders around the world.

In a show of solidarity with the people of Sri Lanka, the iconic sails of the Sydney Opera House will light up this weekend.

"On Sunday we will light the sails of the Sydney Opera House as a symbol of solidarity, support and respect for the people of Sri Lanka," Berejiklian said on Wednesday night.

"Our thoughts and prayers are with everyone affected by the Easter Sunday terrorist attacks."

Among the victims were two Australian citizens, while another two were also injured.

Manik Suriaaratchi and her 10-year-old daughter Alexandria were attending an Easter service at a church in Negombo, north of Sri Lanka's capital Colombo, when a bomb exploded.

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Suriaaratchi's husband had just walked out of the church when the blast tore through the building. He immediately ran back into the church to look for his wife and daughter, searching for more than half an hour before finding their bodies among dozens of other victims on the floor.

On Wednesday it was revealed one of the suicide bombers behind the attacks is believed to have studied at an Australian university.

The Silver Fern of New Zealand is seen projected onto the sails of the Opera House in Sydney following the deadly terror attack on two mosques in Christchurch. Image: AAP

Sri Lanka's Deputy Defence Minister told media the nine bombers were well-educated and had come from upper-middle class and financially stable families.

Ruwan Wijewardene said some of the attackers had studied in various countries and were "quite well-educated people" holding university degrees.

Responding to reports one of the bombers had studied in the UK,  he said authorities believed the man had studied there before undertaking his post-graduate degree in Australia.

After finishing his studies in Australia, authorities believe he relocated to Sri Lanka.

More than 60 people have been arrested over the attacks.