A sniper fired "a rain of pellets" from a high-rise apartment building Tuesday, slightly injuring three police officers and closing a busy Manhattan highway, authorities said.

Police said they had pinpointed an 11th-floor apartment as the source of the shots and sent hostage negotiators to talk to a disgruntled tenant, but the man did not respond.Deputy Inspector James Fogerty said the man apparently had a complaint against the building management.

Scores of emergency service officers, highway and patrol officers rushed to the scene, cordoning off a four-block area.

The busy FDR Drive, a main conduit into Manhattan from Brooklyn, Queens and the Bronx, was closed in both directions in the area.