Tech giant Google on Tuesday paid tribute to the victims of a deadly blast in Quetta a day earlier, displaying a single burning candle on the localised page of the search engine.

Hovering over the candle on google.com.pk reveals the text "In memory of the victims in Quetta".

At least 70 people were killed and over 100 injured after a suicide bomber struck the emergency ward of Quetta's Civil Hospital, where scores of people had gathered to mourn the death of Balochistan Bar Association (BBA) president Bilal Anwar Kasi in a gun attack earlier in the day.

Witnesses present at the hospital at the time of the attack recall complete chaos at the site, with bodies lying on the ground amidst pools of blood and debris.

The attack was claimed by Tehreek-i-Taliban Pakistan splinter group Jamaatul Ahrar and the militant Islamic State group, but Balochistan Chief Minster Sanaullah Zehri hinting at the involvement of Indian spy agency Research and Analysis Wing.