Iran executed a man on Saturday who it said was convicted of spying for Israel and having ties to Iranian opposition groups, the judiciary’s Mizan news agency reported.

Entangled in a decades-long shadow war with Israel, Iran has executed many people it accused of having links with Israel’s intelligence service and facilitating its operations in the country.

The Oslo-based Iran Human Rights group said on X that the man, whom it identified as 27-year-old architecture student Aghil Keshavarz, was sentenced to death on charges related to espionage for Israel “based on confessions extracted under torture”.

Iranian authorities have executed at least 841 people so far this year, marking a major increase, the United Nations human rights office said on Aug. 25.

One hundred people were executed in July, more than double the number of people executed in July of last year, according to the Office for the High Commissioner of Human Rights.

U.N. human rights chief Volker Turk called on Iran to temporarily halt carrying out the death penalty as a step towards completely abolishing the use of capital punishment.

The death penalties come after Israel and Iran went to war in June. The war began when Israel bombed military and nuclear facilities in Iran in a surprise attack, assassinating prominent military leaders, nuclear scientists, and politicians, killing civilians, and damaging or destroying air defenses through operations that relied on Mossad commandos being deployed deep inside the country.

Iran retaliated with over 550 ballistic missiles and over 1,000 suicide drones.

Executions of Iranians convicted of spying for Israel have significantly increased this year, with multiple death sentences carried out in recent months.