The Crown has dropped six sex exploitation charges and one assault charge against former NHL hockey agent and junior hockey coach David Frost.

Prosecutor Adam Zegouras told a Napanee, Ont., court Tuesday that a number of senior Crown lawyers took the action after reviewing the charges. Prosecutors decided there was "insufficient evidence" that Frost was in a "position of trust or authority" when the alleged attacks occurred.

Frost, 39, still faces six sex exploitation charges involving three young boys and one girl, who werebetween 14 and 15 when the alleged offences occurred between 1995 and 2001.

The case against Frost is slated to resume in May, when prosecutors hope to have a date set for a preliminary inquiry to see whether there's enough evidence to go to trial.

The Battersea, Ont., residentwas arrested last August following a two-year investigation by the Ontario Provincial Police.

He was charged with 12 counts of sexual exploitation and one count of assault of four males and three females.Police said the victims were between the ages of 14 and 16 at the time of the alleged assaults, which reportedlytook place between 1995 and 2001 in the Deseronto and Napanee area of eastern Ontario.

Frost was released on $10,000 bail.

Police and prosecutors refused to say if the alleged victims, whose identities are protected by a publication ban, were involved in hockey.

Frost's name has been in the headlines over the past two years for his relationship with Mike Danton, a Brampton, Ont., native and former St. Louis Blues forward who was sentenced to 7½ years in a U.S. federal prison in November 2004 for plotting to have Frost killed.

Frost, who resigned as an NHL agent in December 2005, has denied he was the intended target of the murder-for-hire plot.

Despite his conviction, Danton has continued to defend Frost.

Danton's relationship with Frost led the former NHLer to become estranged from his parents. He officially changed his last name to Danton in 2002 and cut off all communication with his family.

Before becoming a player agent, Frost spent several years coaching minor and junior hockey.

With files from Canadian Press