And state officials now say the team of independent auditors that was hired in March may not be finished with its work until June 2023 — delaying any insight into the multibillion-dollar program that local districts rely on to finance school construction and renovation. Federal investigators first subpoenaed the state for records related to the school construction program in October 2021, and they focused their requests on several contractors and Konstantinos Diamantis, who led the school building program for more than six years prior to his exit from state government last fall. Nobody has been charged to this point as part of the federal investigation. But when news of the criminal probe broke in February, several school superintendents and local elected officials came forward to announce that they felt pressured to choose specific construction contractors for their school building projects. Documents obtained by the Connecticut Mirror show the agency hired Marcum LLP, an auditing firm with offices in New Haven, on March 8 to analyze those programs — both of which were overseen by Diamantis and were the focus of the federal grand jury subpoenas.