Sirens sounded across Bahrain, the country's Interior Ministry announced on Friday morning, urging citizens to remain calm and head to the nearest shelter.
The attack follows Iran's overnight strikes against Kuwait and US military infrastructure in Jordan.
Iran's army quickly took responsibility for the strikes, reportedly having targeted the fuel tanks, warehouses, and accomidations of the United States's Sheikh Issa base in Bahrain using drones, according to Iran's semi-official news outlet ISNA.
Further, ISNA reported that the earlier strikes in Jordan had targeted US Air Force infrastructure at the American Al-Azraq base.
Later on Friday, the IRGC-linked Tasnim news agency reported that Iran had launched drones at US military bases in Kuwait and Qatar.
Drone crashes into Iraqi airport, no injuries reported
Separately, a drone crashed near Erbil International Airport in Iraq on Friday, prompting a temporary suspension of flights, two security sources told Reuters.
No injuries were immediately reported, while a fire at the site was being brought under control.