In one incident on Wednesday, armed Sunnis are reported to have sealed off an entire town.
She added that part of the road had been sealed off for a forensic examination.
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That advance stopped at Tiji, the city now sealed off by rebels on three sides.
The town was sealed off and 30 people were arrested in the incident on 29 September.
Police there sealed off intersections, for a time patrolling with rifles hoisted to their shoulders.
Tunnels were excavated across the islands during the German occupation, with some having been sealed off since.
The area around the car park has been sealed off as police carry out a follow-up operation.
As Laiki is dismembered, users' data needs to be safeguarded and access to the systems sealed off.
Within minutes, widening lines of police officers sealed off the area by forcing back bystanders and journalists.
Unlike the Soviet Union or China in the 1950s, Iran is not sealed off from the world.
The mountain roads were sealed off as dozens of police, FBI agents, sheriffs and snipers moved in.
There was huge security at the courthouse, which was sealed off by more than 100 police officers.
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In Riverside, police sealed off intersections in the downtown neighborhood where the two officers had been shot.
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The authorities had earlier sealed off Mr Mousavi's campaign HQ, preventing his supporters from holding a news conference.
All entry points to the proposed site were sealed off by baton-wielding police contingents stationed behind barbed wire.
The beach has been sealed off and will remain closed until further notice.
The house has been sealed off while police forensic officers examine the scene.
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An extra 15, 000 police had been deployed on the streets and many parts of the capital were sealed off.
The murder scene has remained sealed off for further searches and forensic examination.
Police called for backup from the army and sealed off the Hadida area.
Armed police fired back when they came under attack and the area nearby was sealed off as the siege began.
Infected farms were immediately sealed off, with police stationed outside the gates to prevent anyone entering or leaving the premises.
Police have sealed off affected areas to prevent access by foreign journalists, making reports of recent events difficult to confirm.
Police quickly sealed off the scene following the attack which happened in the early hours on Monday, south of Acapulco.
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Bailiffs cleared the square, which Mr. Johnson then had sealed off with seven-foot-high metal barriers that remain in place today.
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Her house is one of 10 homes which have been sealed off under danger of collapse since the tunnel gave way.
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An anti-gun campaigner has been arrested in Liverpool following an incident which saw part of the Liverpool One complex sealed off.
The area was sealed off for more than 24 hours as searches were carried out by police and bomb disposal experts.
The centre of Manchester's Chinatown has been sealed off after knife-wielding gangs clashed on its streets and six men were stabbed.
Part of Commercial Road was later sealed off and a car was towed away by police from a nearby block of flats.
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