Acting on a hot tip, cops caught him with his pants down

Notorious “Cascade Flasher” captured, bringing a premature ending to a three-decade career.

A Michigan man could face life in prison [no, he is not; reporters are so ignorant — ed] after admitting to cops that he’s the notorious “Cascade Flasher” — the serial perv who’s been turning stomachs in the western part of the state since the Clinton administration.

Kent County deputies spotted Steven Todd Pastoor Wednesday as he stood naked from the waist down outside an apartment building, and peeped in a window, police said in court records obtained by MLive.com.

Cops followed Pastoor, 54, of Grand Rapids, and arrested him at a nearby parking lot, where, still half-nude, he began strolling toward I-96, investigators said.

“He admitted to the repeated exposures dating back to the late 1990s,” Deputy Paul VanRhee wrote in a probable cause affidavit.