Now they again believe the killer, or killers, were almost certainly Asian.
Investigators believe the killer was traveling with the family before shooting them and driving away.
Investigators linked the gun to a 2009 shooting, also in Queens, though they did not believe the killer was involved.
Investigators said yesterday that although they believed the killer might be someone Ms. Stein knew, they had no leading suspects.
Police say believe the killer returned to the scene of the crime to watch as the murder was investigated by officers.
The authorities believe the killer to be male, based in part on grainy security video that showed a man in dark clothing approaching the first victim.
Mourinho has dismissed a move for Gonzalo Higuain of Napoli and believes the "killer" striker he covets is not available at this time of year.
Police arrested more than 1,200 people in what was called a "pre-emptive raid" on the warehouse where the rioters believed the killer worked, Russian news agencies reported.
The authorities believe the killer may have burglarized Mr. Breathed's home when he was a student at the University of Texas at Austin.
Kristiansen added that she did not believe the killer was insane, but calculating and evil, and someone who sought the limelight.
