The bombings have continued despite heightened security across the country.

"If people do see a heightened security around these buildings, the reason for that is we are being careful."

Heightened security was also visible here in the capital on Thursday.

Heightened security is used to ensure no violence between the opposing groups.

Heightened security is expected for Sunday's match, Iranian officials said.

Officials said they would continue heightened security for industries like aviation, banking and energy that are regarded at risk of attack.

Heightened security at borders and airports appeared likely to limit the ability of many companies to deliver goods on time.

The car used to bomb the embassy was able to get past heightened security because it had diplomatic registration plates.

His visits mean heightened security, added personnel and lots of extra equipment, from air power to firepower.

Heightened security and the curtailment of food shipments were doing little to keep the occupied territories in line.