They had been featured in previous investigations into other people, but were not themselves under surveillance.
Merah had been under surveillance by French intelligence for years, Interior Minister Claude Gueant said.
They had discussed targets while under surveillance but had not settled on a final plan.
In fact, we got tips about police officers who we had to put under surveillance.
Ahmedzay and Medunjanin, residents of the New York borough of Queens, had been under surveillance.
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Informants infiltrated the group, and FBI agents put the suspects under surveillance, watching and recording them for 15 months.
The Canadian Broadcasting Corporation quoted "highly placed sources" as saying the suspects were under surveillance for more than a year.
Despite the fact that the FBI had had him under surveillance, Bledsoe was still able to acquire guns for his attack.
Once the department had Tamerlan under surveillance, the NYPD's cyberunit might have detected his suspicious online viewing choices and social-media postings.
The group had been placed under surveillance by HM Revenue and Customs (HMRC) and the Serious and Organised Crime Agency (SOCA).
Russia put Tamerlan Tsarnaev under surveillance during his six-month visit to Dagestan.
Then he should put the organization under surveillance, ascertain its funding sources, look over its books, and check its staff's visa status.
Police have also identified 320 known street criminals who are being put under surveillance and arrested for any crime, street-related or otherwise.
When you relocate someone you actually disrupt them, whereas when you place them under surveillance you're really just keeping an eye on them.
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Authorities had put the person under surveillance and then began to suspect the person was connected with the Brussels robbery, the spokesman said.
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Government officials also have said only people suspected of having a connection to al Qaeda or another terrorist organization are placed under surveillance.
He was placed under surveillance in 2010 after officers became suspicious.
Dutschke's house, business and vehicles in Tupelo were searched earlier in the week often by crews in hazardous materials suits and he had been under surveillance.
Abassi previously lived in Canada, traveled to the United States in mid-March and was under surveillance by law enforcement until he was arrested on April 22, said prosecutors.
Police found the burned vehicle, registered to England, on Saturday evening, leading them to put him under surveillance and get warrants to arrest him and search his home.
The Iraqi officer or officers knew they were under surveillance.
Derek Webb, who placed over 150 people under surveillance in his work as a private investigator for the NoW, claimed the paper had sought to disguise their use of investigators.
Questioned by defence QC Ignatius Hughes, she said it was common knowledge Mr Taylor was under surveillance at the time he made remarks denying any involvement in his wife's disappearances.
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Before the bombings, the intelligence service had the accused men under surveillance, as well as the supposed mastermind, Talwinder Singh Parmar, who died in a shoot-out with police in India in 1992.
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The latest tunnel was discovered after US agents patrolling near the border crossing in the Otay Mesa area of San Diego pulled over a tractor trailer that had left a warehouse under surveillance.
Questions have been raised as to why Mohammed Merah -- a petty criminal who was placed under surveillance by French authorities after visiting Pakistan and Afghanistan -- was not being more closely watched.
Agents launched the raids after police stopped Zazi on the George Washington Bridge during a recent visit to New York, raising concerns that he would figure out he was under surveillance, the former official told CNN.
Agents launched the raids after police stopped Zazi on the George Washington Bridge during a recent visit to New York City, raising concerns that he would figure out he was under surveillance, the former official told CNN.
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Russian agents placed the older suspect under surveillance during a six-month visit to southern Russia last year, then scrambled to find him when he suddenly disappeared after police killed a Canadian jihadist, a security official told the AP.
This operation was several weeks in the making, and the small village of Zargaran, in the southeastern province of Zabul, has been under surveillance much longer, says a Special Forces captain who is the commander of the joint operation.
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