Woods was indicted in May by the Aroostook County grand jury.
The former chief resigned in January and was indicted on three counts of unlawful sexual contact that involved penetration, one count of unlawful sexual touching and three counts of assault.
Collins said there are two victims in the case, but he could not divulge any information about the ages of the victims or their statements about what allegedly took place.
Court documents stated that Woods was indicted on three counts of unlawful sexual contact with the first victim, who is identified in court documents only by her initials. The Bangor Daily News typically does not identify victims and is not publishing the initials.
The indictment charged that Woods twice had unlawful sexual contact with the first victim on or about Aug. 1, 2009, and once on or about Jan. 1, 2010. The indictment states that Woods subjected the woman to sexual contact to which the victim "had not expressly or impliedly acquiesced."
Woods also was charged with one count of assault with the same victim on each of the same dates.
The indictment also stated that Woods subjected a second victim to unlawful sexual touching on or about Dec. 23, 2011, which is also when an alleged assault occurred.
On the assault charges, the indictment alleges that Woods "did intentionally, knowingly or recklessly cause bodily injury or offensive physical contact" to the victims.
The alleged crimes reportedly all occurred in Caribou.
On Thursday, Collins said he could not comment on if any plea deals are currently being negotiated with Woods and his attorney.
Woods was not arrested and is not considered a flight risk.
The former chief's career included 21 years as the head of fire, ambulance and emergency management services for the city. According to a copy of his resignation letter, Woods said he was resigning for "medical reasons," and indicated that the stress of the job had become too much for he and his wife to handle.
He went on to say that he "spent his life" working to protect the city, working his way up from firefighter to firefighter/paramedic instructor and eventually chief.
Former City Manager Steven Buck, however, issued a statement indicating that he accepted the resignation "in lieu of termination" after an investigation into a complaint filed against the fire chief by a city employee.
In his statement to the media, Buck referred to an investigation into a complaint against Woods.
"An independent investigation into the personnel matter was conducted with an expanded scope," said Buck. "After extensive review and evaluation of the results of the investigation, my own evaluation, and after reviewing these evaluations with Woods and a subsequent review of his responses, I accepted his immediate resignation."
Buck, who served as Caribou's city manager for 11 years, is now manager in Sanford.
Firefighter and paramedic Scott Susi, a 7-year member of the Caribou Fire and Ambulance Department, was named the new chief in March.
Written by Bangor Daily News