The United Nations’ highest court ordered Pakistan on Wednesday to stay the execution of an alleged Indian spy and undertake a full review of his case, after agreeing with India’s contention the man’s rights had been violated in a case that has been a source of friction between the nuclear neighbors.

International Court of Justice President Abdulqawi Ahmed Yusuf said the panel of judges found 15-1 that Pakistan violated international law by not providing Kulbhushan Jadhav access to consular assistance or the ability to choose his own defense attorney.

Jadhav was arrested by Pakistan in 2016 after allegedly entering the country from Iran, and convicted of espionage and sabotage by a Pakistani military tribunal and sentenced to death in 2017.

India had denied that Jadhav was a spy and asked the world court to order his release, arguing his rights were violated in breach of an international treaty.