Residents say explosions and air-raid sirens have become common sounds throughout the day and night. In some neighborhoods, windows have been shattered and residential structures partially damaged by nearby blasts.
For many civilians, the sudden escalation has created an atmosphere of fear and uncertainty, as people attempt to understand which areas might be affected next.
Hospitals under pressure
Medical facilities in Tehran have also been placed under significant strain. Hospitals are treating large numbers of injured civilians while also dealing with shortages of supplies and limited electricity in some areas.