DENVER The action against the priest was swift and public.

Within five days of receiving a decades-old child sex abuse allegation against the Rev. Melvin Thompson, Denver's Roman Catholic Archdiocese investigated, alerted law enforcement and announced his suspension to parishioners and the public.

The archdiocese says Thompson, 74, maintains his innocence. Some parishioners have complained the process was unfair and too fast. However Denver Archbishop Charles Chaput called prompt action "painful but necessary."

The episode highlights the challenges American Catholic Church leaders face as they follow through on a promise to be more transparent in dealing with priests accused of abuse, while respecting the rights of both victims and the accused.

The case comes amid a worsening global clergy abuse scandal focused on how Pope Benedict XVI has dealt with problem priests in his past church roles.

For years, some U.S. church officials kept mum about abuse allegations and shuffled problem priests from parish to parish practices first exposed in the 1980s and then on a larger scale in the early 1990s.

Denver's handling of the Thompson case is the latest example of American Catholic leaders shifting from secrecy to greater openness, an attitude church leaders elsewhere in the world have been slower to adopt.

This week, the Vatican for the first time made it clear that bishops and clerics worldwide should report such crimes to police if they are required to by law, matching a policy worked out by U.S. bishops after an explosion of sex abuse cases in 2002.