A registered sex offender from Colorado accused of sending an undercover federal agent in Portland sexually explicit pictures of a young girl via email has been arrested to face child pornography charges in Maine.

David William Burkman, 30, of Cañon City, Colorado, was arrested in Colorado on Monday on two charges of transportation of child pornography and was ordered held after being brought to U.S. District Court in Denver to make an initial appearance on the charges.

Burkman, who is also known as David Whiteraven, will eventually be brought to federal court in Maine to face the charges here, but no court date had been set by Tuesday.

The federal agent in Portland, David Fife of the Department of Homeland Security, emailed Burkman on April 21 and April 22 using two different undercover identities after finding Burkman’s profile on a password-protected website known for trading child pornography, according to court records unsealed on Monday.

Burkman is accused of sending Fife four different sexually explicit images of a young girl between the ages of 4 and 6, including one in which a man could be seen in the picture, according to an affidavit Fife filed in federal court in Portland seeking a warrant for Burkman’s arrest.

In the emails that Burkman sent to the federal agent, he referred to the girl in the images as “somewhat adventurous … she is a spitfire” and said that he had “been active with her for about a year or so now,” according to court records.

Burkman is listed on the Colorado Sex Offender Registry. He was sentenced in 2008 in Colorado to serve five years for two counts of sexual exploitation of a minor and was released early in 2011, according to court records.

If convicted, Burkman faces no less than 15 years and up to 40 years in prison and a fine of up to $250,000 on each charge.

Scott Dolan can be reached at 791-6304 or at:[email protected]Twitter: @scottddolan