NAPERVILLE, Ill. (STMW) – Two more criminal charges have been filed against a track and triathlon trainer accused of sexually molesting a west suburban Naperville boy over a two-year period.

A DuPage County grand jury on Thursday indicted the man, Robert J. Theodore, on five felony counts of aggravated criminal sexual abuse. He formerly faced trial on three such counts.

Theodore, 60, is a former Lisle High School track and field coach. He most recently worked as a trainer at Lifetime Fitness, at 28141 Diehl Road in Warrenville, where one alleged molestation occurred.

The grand jury indictment declared the abuse happened between Sept. 14, 2007 and Sept. 13, 2009, when the youth would have been 16 and 17.

Two of the alleged incidents occurred in the boy’s home on Naperville’s northwest side, while two others occurred in Theodore’s home on Hagen Court in Woodridge, according to the indictment. The fifth incident occurred when Theodore and the youth were together in a hot tub at Lifetime Fitness, the indictment stated.

Theodore was taken into custody last month by Naperville police. Cmdr. Brian Cunningham said his arrest followed “a seven-month investigation (of) reports that Theodore was having inappropriate contact with minors” while “actively training area track and cross country athletes.”

Paul Darrah, spokesman for State’s Attorney Robert B. Berlin, said Theodore bought expensive gifts for the Naperville boy that included a specialized bicycle, an iPod Touch and clothing.

Theodore has been subject to GPS monitoring since being released from custody last month on $25,000 bond. He is scheduled to return to court Monday.

Authorities in September said Theodore might have had questionable relationships with other local youths. Cunningham on Friday did not immediately return a telephone message that sought to determine whether other boys who might have had contact with Theodore had come forward.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)