Michael Irvin has recently been accused of misconduct in Texas ... cops tell TMZ Sports they've launched a criminal investigation into the Dallas Cowboys legend.
A spokesperson for the Allen Police Department would not confirm details of the new probe into the Hall of Famer ... but the rep did say, "It's very early in the investigation."
"At this point," the spokesperson said, "we aren't prepared to release any classification regarding Mr. Irvin."
Levi McCathern, Irvin's attorney, said in a statement to Pro Football Talk his client has done nothing "wrong or inappropriate.