NEW YORK AP) _ A USAir jetliner with 81 passengers aboard made an emergency landing Thursday after the pilot reported an unusual odor in the cockpit.

The Boeing 737 was flying from Providence, R.I., to Philadelphia when it was diverted as a standard precaution, said USAir spokesman John Bronson. Nobody was injured.

Police initially said the pilot had smelled smoke in the cockpit but Bronson said it was an odor and the smell could be detected in the passenger cabin as well as the cockpit. The exact nature of the odor had not been determined, Bronson said.

Passengers from the flight were either put on other planes or used ground transportation to reach their destinations.