11.   They were often driven by sexual obsession and were scrupulous about concealing their crimes.

12.   Yet secretly they meet at an abandoned house to plan and conceal the crime, then patiently observe the investigation.

13.   At some sites, witnesses reported that bodies were removed to conceal the crimes.

14.   He was charged Wednesday with first-degree intentional homicide and dismembering a corpse with the intent to conceal a crime.

15.   Rukimin told his accomplices to bury the body and cover it with a concrete slab to conceal their crime.

16.   Tezel was charged with resisting police, misappropriating state property and concealing a crime, Turan said.

17.   The victims were stabbed and their apartment set on fire in an effort to conceal the crime.