He also asked the Manhattan District Attorney, Robert M. Morgenthau, to investigate.

The Manhattan District Attorney is investigating the same material, according to Dr. Green and officials of the District Attorney's office.

The Manhattan District Attorney is investigating reports of embezzlement, kickbacks and vote fraud in the council.

The panel said it had not pursued the building inquiry because the Manhattan District Attorney, Robert M. Morgenthau, was investigating the transaction.

The Manhattan District Attorney and the city's Board of Correction are investigating whether a deterioration in medical care contributed to the deaths of several inmates.

Although the city and the Manhattan District Attorney are still investigating the scaffolding collapse, the project's spate of mishaps has not set off alarms among building officials.

The Manhattan District Attorney is investigating the process by which Lincoln Square won city approval without public review.

A law enforcement official, who insisted on anonymity, said the Manhattan District Attorney was also investigating the tests.

Law-enforcement officials said that Mr. Wilson was among the Senate employees whom the Manhattan District Attorney was investigating.

The Manhattan District Attorney is investigating numerous accusations of corruption.