The Israeli military said it was conducting strikes in the Tehran area early Wednesday local time. The announcement came shortly after it warned residents of a Tehran district to evacuate, saying that it would be striking at military infrastructure in coming hours.

Iran’s allies, the self-described “Axis of Resistance,” have been severely hurt by ongoing Israeli attacks since the Oct. 7, 2023, Hamas attack on Israel, particularly Lebanon’s Hezbollah and Hamas in the Gaza Strip. Iran has long used those groups as both an asymmetrical way to attack Israel and as a shield against a direct assault.

Israel warned Tehran civilians to evacuate the city ahead of planned Israeli strikes on “the Iranian regime’s military infrastructure” on Monday—the first time in the now four-day conflict that an evacuation warning has been issued for targeted residential areas.