The layoffs would represent about a quarter of the most recent staffing number available. The company did not respond to a request for an updated head count in St. Charles.
A circuit judge last week denied Montgomery's request for a new trial over allegations he wrongfully disarmed a former deputy and ordered the handcuffing of a city jail official.
Sources said the failure to find evidence in the Puerto Rico machines led the administration to expand the investigation to Georgia, where the FBI seized 2020 election ballots, and Arizona.
By Jonathan Landay, Erin Banco and Phil Stewart, Reuters
The delay came at the request of new Mayor Adrian Shropshire, who was sworn into office this week after the incentive bill had already been negotiated.