1.   Investigators could not check the bolts because they had fallen into the sea.

2.   A spokesman for U.S. Attorney Mary Jo White said investigators were checking whether Frank had accomplices.

3.   But investigators said checking backgrounds is more intensive work than they had anticipated.

4.   But the questioning became less friendly, and Blackley said he began to hear from friends in Mississippi that investigators were checking on him.

5.   Doucet said that earlier Tuesday, Canadian investigators checked three oceangoing vessels in Halifax, Nova Scotia.

6.   He said investigators checked the signal by simulating the presence of a train where the M was.

7.   Investigators also were checking the quality of the fuel on the plane to see whether it could have played a role in the crash, Pataki said.

8.   Investigators also check to be sure that the child is being given up voluntarily by the birth mother or parents.

9.   Investigators are checking hunting licenses to determine who was authorized to hunt in the area and might have been there Saturday or Sunday, Stuart said.

10.   Last week, the Justice Department said investigators would check for evidence of collusion and price-fixing in the industry.