Ten people died and 45 were injured in India when a bomb hidden in a briefcase exploded in a crowd of people waiting to secure passes to enter the High Court in New Delhi.
The latest attack came nearly two months after terrorists detonated bombs in three crowded neighborhoods in Mumbai on July 13, which left 20 dead.
Judges and lawyers fled from inside the courthouse and passersby rushed to the site to help the injured, the Associated Press reported.
In neighboring Pakistan, twin suicide bombings at the home of a senior military officer in the southwestern city of Quetta killed 23 people, including the officer's wife and at least eight soldiers.
The first bomber drove his explosives-laden vehicle next to a group of Frontier Corps officers standing near the deputy chief's residence. The second suicide bomber hurled grenades as he ran toward the house, detonating his explosives belt once inside.
Wednesday's bombing may have been in response to Monday's announcement by the army of the arrest of senior al Qaeda operative Younis al-Mauritani. The army stressed the prominent role the CIA played in the operation.
"The attack was maybe in reaction to the recent arrests," the AP quoted police officer Hamid Shaki.
According to the report, stressing the role of CIA involvement coupled with praise for the arrest by U.S. officials may point to an improvement in the strained relationship between the two countries.
During confirmation hearings last June before the Senate Armed Services Committee, former CIA Director Leon Panetta called the relationship a "difficult one."
"The relationship with Pakistan is at the same time of one of the most critical and yet one of the most complicated and frustrating relationships that we have," Panetta said.