A businessman involved in the case cooperated with the district attorney's office, and he secretly recorded conversations he had with Ms. Davis, people involved in the investigation said.
Another UBS banker, Renzo Gadola, pleaded guilty in the tax fraud case, cooperated, and was granted probation.
In that case, cooperating witnesses, including Assemblyman Nelson L. Castro, who has since resigned, wore devices to record conversations that led to the arrest of Eric A. Stevenson, a Democratic state assemblyman who was accused of accepting more than $22,000 in bribes to help developers open adult day care centers in his district in the South Bronx.
To get the best results from your case, cooperate with your attorney.
Social network, in computers, an online community of individuals who exchange messages, share information, and, in some cases, cooperate on joint activities.
Witness in Galleon Case Cooperates, and Reward Is Probation | Anil Kumar has been "a crucial guide and witness for the federal government in its widespread crackdown on insider trading," Mr. Ahmed reported.
The third man convicted in the case, Wali Khan Amin Shah, cooperated, at least for a time, after his conviction in 1996, the American authorities said, and he could have been a source of information about Mr. Mohammed.
A federal district judge in Brooklyn has asked the United States attorney's office there to review whether to pursue criminal contempt charges against a lawyer who revealed in court papers in 2010 the identity of a businessman who had pleaded guilty in an organized-crime case and cooperated with the government.
Benton, Tate and Kesari are charged with hiding more than $70,000 in payments to an influential former state senator, Kent Sorenson, who has pleaded guilty in the case and cooperated in the investigation.
When trying to meet the needs of older persons, the case managers cooperated with different professions within the health system and with voluntary organizations.
But Ms. Yu had similar problems as a witness, because she had pleaded guilty to perjury in the case before cooperating with federal investigators.
