Archer said police have been studying closed circuit television footage from Aikman's Bar in the suburb of Merivale and interviewing witnesses.
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The closed circuit television cameras fitted in some stations since last year's bombings are one of the few measures the railway authorities have taken so far.
He also called for closed circuit television cameras in Cluan Place and reiterated his call for a permanent police presence in the republican Short Strand and loyalist areas.
Fredericks notes that Boston police are likely now going through a similar process, collecting every piece of digital media available from transit and nearly 600 closed circuit television cameras covering the Massachusetts Bay Transportation Authority alone.
Chen said he heard Meng make the pledge at a conference carried on closed-circuit television.
This includes manning X-ray machines, searching people, searching vehicles and operating closed-circuit television systems, he said.
Mr Lin also tells Hong Kong's Ming Pao that his family home has installed closed-circuit television as a precaution against villagers.
They should have been played on closed-circuit television for all U.N. delegates.
"We've had considerable success in the past using closed-circuit television footage in order to trace the movements of the people involved, " he said.
He imposed the fines via a closed-circuit television link to Ranong Provincial Prison, where the refugees will continue to be held until they can pay the court.
He then traveled to the beach resort of Pattaya, where closed-circuit television cameras captured the three suspects staying at a budget hotel in the city before moving on to Bangkok.
The staff were supposed to be doing tasks including venue perimeter security such as manning X-ray machines, searching people, searching vehicles, and operating closed-circuit television systems, G4S told CNN on Sunday.
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Israelis also monitor the crossing via closed-circuit television.
The British are also likely to uncover a good deal about this plot because there are hundreds of closed-circuit television cameras in London, probably more than anywhere else in the world, and they might have picked up the attackers.
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