By Brad Segall and Walt Hunter

LANSDALE, Pa. (CBS) — A former head lacrosse coach at Lansdale Catholic High School in Montgomery County, Pa. is facing stalking and harassment charges for allegedly making false accusations against two other coaches at the school.

Prosecutors say between October of last year and May of this year, Tim Udinski on seven separate occasions sent false claims of sexual abuse in anonymous e-mails to the Archdiocese of Philadelphia.  They say he deliberately and falsely claimed the football and lacrosse coaches at the school were soliciting players on their teams.

Montgomery County DA Risa Ferman says Udinski also accused the principal of covering up the alleged misconduct.

“We used… or perhaps a better word is ‘wasted,’ thousands of dollars.   We used close to 200 man-hours.  We interviewed 97 individuals,” Ferman told KYW Newsradio today.

As for a motive, Ferman says the 43-year-old Doylestown man was fired last year and this may have been his way of getting back at the school.

Court records reveal that he admitted targeting the two men and the complaints were untrue.

Udinski is now free on unsecured bail.