Armor Correctional Health Services says it will terminate its contract to provide health care services to Nassau County Jail if it is not paid $2 million it says it is owed by the county.

Armor says it will terminate its contract Friday. The ultimatum was in a letter sent to Nassau County officials this week. Nassau Comptroller George Maragos says his office will not be intimidated.

"We have not withheld payment," says Maragos.

Armor says the county owes $2 million for the services it received in July and August. Maragos says the county has requested and is still waiting for some documents from Armor detailing its performance for those months before any money is to be paid.

Maragos says since the company has provided what he calls "inadequate care" as outlined in its contract, $165,000 in penalties will be deducted from the amount due.

"They only meet the performance criteria 27 percent of the time," says Maragos.

So far this year, six inmates of Nassau County Jail have died. The deaths led to an investigation by the state attorney general and a slew of unanswered questions from family members and county legislators.

Armor won an $11 million per year contract with the county back in 2011. Its contract ends in May.

Maragos told News 12 Long Island that he believes the county likely has a backup company to step in if Armor backs out of its contract.

He says he expects to get an updated invoice from Armor soon and will make a payment once it's approved.