Former NFL star Eddie Lacy was thrown behind bars in Arizona on Monday night ... after cops claimed he was driving while wasted.
According to the Scottsdale Police Department, the ex-Green Bay Packers tailback was pulled over at around 10:40 PM -- after officers said they saw him committing several traffic violations.
He apparently elicited signs of being intoxicated during the stop ... as an SPD spokesperson tells TMZ Sports Lacy was ultimately arrested and booked on four separate DUI charges, including "Extreme DUI -- BAC .