Story highlights Lawyers strike across Pakistan in protest

Bomb blast at hospital in northwestern Pakistan kills at least 72, with 112 injured

Lawyers and journalists at hospital after body of activist lawyer Bilal Kasi brought there

Correction -- A previous version of this story published on August 8, 2016, stated that the Pakistan Taliban, rather than a splinter group, claimed responsibility for the attack.

(CNN) Thousands of lawyers boycotted courts across Pakistan Tuesday to protest against one the of the deadliest attacks the country has ever seen.

Hours after a prominent lawyer was gunned down in Pakistan, more than 72 people were killed in a bombing at the hospital where his body was taken. Many of those killed in the blast were lawyers and journalists who had gathered at the hospital to mourn and report on the death of lawyer Bilal Kasi, who had been gunned down earlier in the day.

Farogh Naseem, Vice Chairman of the Pakistan Bar Council, told CNN there will be seven days of mourning, and the strike will continue for an additional two days as the organization tackles concerns over the safety and security of Pakistan's lawyers.

'Utter horror and devastation'

The explosion at a hospital in Quetta on Monday also injured 112 others, said Rehmat Baloch, the health minister of Balochistan province in the western part of the country.

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