NEW YORK (AP) — Federal investigators are looking into the financial records and other documents of the powerful union representing New York City's 9,000 jail guards, the union's president and its law firm confirmed Wednesday to The Associated Press. Manhattan U.S. Attorney Preet Bharara's office appears to be focusing in part on claims in a union official's lawsuit alleging the improper investment of union funds. Among the allegations in the lawsuit is that Correction Officers' Benevolent Association President Norman Seabrook made a risky $5 million investment into an unnamed hedge fund last year without union board approval. The investigation comes as Bharara negotiates a class-action lawsuit against the city claiming systemwide brutality against inmates by jail guards at the Rikers Island jail complex. Abuse, neglect and corruption at Rikers have been the subject of increased media attention for more than a year after the AP first reported on claims of widespread brutality in the lockups and the gruesome deaths of mentally ill inmates.