1.   The suspects were tracked down to a Bombay hideout.

2.   But, as with several other instances in which prosecutors tried unsuccessfully to track down suspects, they were never able to identify the man.

3.   FBI officials tracked suspects around the world.

4.   In several cases, animal blood or hair found on bodies or clothing at crime scenes has helped the police in tracking down suspects.

5.   It remains unclear how authorities will enforce the new law, and some law enforcement officials questioned whether police departments have the know-how to track suspects through cyberspace.

6.   Police track a suspect to a shed, which officers demolish with an armored personnel carrier equipped with a battering ram.

7.   The FBI could use the same system, with a court order, to track suspects.

8.   The officials said the DNA database could help in forming a more complete picture of the Qaida network and in tracking terrorism suspects in the future.

9.   The new law makes it easier for the government to arrest and deport people, monitor Internet activity and financial transactions and use wiretapping to track suspects.

10.   The officials said the DNA database could help in tracking terrorism suspects in the future.