The officer is accused of crashing his police vehicle into a motorcyclist during a pursuit, fleeing the scene, and falsifying records to cover-up the incident.
Liban Haji Mohamed has been on the FBI's most wanted list since 2015
The owner's co-conspirators have already pled guilty to a prior indictment.
The superseding indictment alleges a years-long bribery scheme in which Menendez accepted luxurious gifts, including watches and tickets to a Formula One event.
Schumer on Wednesday expressed his "disappointment" upon reading the indictment and indicated that the New Jersey senator will address the conference on Thursday.
A Nevada grand jury in December indicted the six Republicans as part of a case from Nevada Democratic Attorney General Aaron Ford.
The morgue director and four others across the country were indicted for their part in the alleged conspiracy.
The charges in the grand jury indictment have not been released.
The charges were included in newly unsealed federal indictment in Manhattan