By last night, neither the police nor school safety officials had reported any violent incidents, gang-related or otherwise, in or around the city's public schools.

Though defending the announcement as a safeguard for an increasingly dangerous time, one official said there had never been a gang-related incident in the school.

He said his brother, Donald, was killed 10 years ago in a gang-related incident.

A tally of gang-related incidents, new this year in Nassau, stood at 267 through August.

Recently, gang-related incidents have been on the rise.

Police officers at the scene said they were investigating the shooting as a possible gang-related incident.

The report also mentioned at least one other gang-related incident in Germany.

A series of gang-related incidents in early 2009 escalated into what police have dubbed a gang war.

Only one violent gang-related incident was reported in the city in the sweep, the police said.

Two 27-year-old Asian men were shot to death early yesterday morning in Queens, in what the police said appeared to be separate gang-related incidents.