Iran executed on Friday four people, including a woman, whom it accused of being “saboteurs” with links to Israel’s Mossad intelligence service, the Mizan news agency affiliated to the judiciary said.

The executions took to five the number of people put to death this month in a decades-long shadow war that has seen Iran accuse Israel of attacks on its nuclear effort, charges the latter has never confirmed or denied.

“Four members of a sabotage team associated with the Zionist regime … were executed this morning following legal procedures,” the news agency said, accusing them of “extensive” actions, guided by Mossad officers, targeting Iran’s security.