An apparent Israeli drone attack on Iran saw troops fire air defences at a major airbase and a nuclear site early Friday morning near the central city of Isfahan, an assault coming in retaliation for Tehran’s unprecedented drone-and-missile assault on Israel.

No Iranian official directly acknowledged the possibility that Israel had attacked, and the Israeli military did not respond to a request for comment. However, tensions have been high since the Saturday assault on Israel amid its war on Hamas in the Gaza Strip and its own strikes targeting Iran in Syria.