With little forensic evidence, detectives scoured Mr. Visich's background, looking for clues.

The attackers fled, apparently empty-handed, and detectives from the 81st Precinct were scouring the neighborhood yesterday, the police said.

It snarled Midtown traffic as detectives scoured the area looking for the three suspects, who had run out an exit on the 35th Street side of the building.

Meanwhile, detectives scoured a building on Anderson Avenue next to where Mr. Betances lived and close to where he died.

Yesterday, detectives scoured the road and interviewed the owner of the house closest to where the body was found.

Knowing they needed more to convict Jennings, detectives scoured the inside of Hiller's home in a search for additional clues.

Throughout the day yesterday, at least 80 detectives scoured the building, the roof and the entire neighborhood for clues or witnesses.

Two detectives scour the scene discussing the reason for the children's death and the reason for it.

On Saturday, detectives had scoured Mr. Famble's neighborhood and questioned his mother about his whereabouts, the police said.

Mr. Tsvetkov's body lay most of the morning on the Arbat as detectives scoured the crime scene.