You really should seek a qualified and experienced attorney to figure this out for you. As I read the statutes, several different ones could apply depending on how you interpret them:

See Title 13, Limitations of Actions, Articles 80 and 82

http://www2.michie.com/colorado/lpex...s-main.htm&2.0

It could be one, two, or three years, depending on the EXACT subsection(s) that the case would be brought under.

§13-80-103(1)(c) typically addresses claims against police officers and limits claims to one year - but it depends on if you are addressing individual officers, or the city as an entity.

For an action brought against the public entity that is based on the actions of an employee, the two-year limitations period in §13-80-102(1)(h), rather than the one-year period contained in §13-80-103(1)(c), is controlling


There is also the Colorado Governmental Immunity Act (GIA), §24-10-101, et seq., C.R.S. 1997 which says:

24-10-109. Notice required - contents - to whom given - limitations.

(1) Any person claiming to have suffered an injury by a public entity or by an employee thereof while in the course of such employment, whether or not by a willful and wanton act or omission, shall file a written notice as provided in this section within one hundred eighty days after the date of the discovery of the injury, regardless of whether the person then knew all of the elements of a claim or of a cause of action for such injury. Compliance with the provisions of this section shall be a jurisdictional prerequisite to any action brought under the provisions of this article, and failure of compliance shall forever bar any such action.

This section also spells out the procedure for notification.