The ICAC said they began investigating Andersen, 33, in February of this year, after they were given a tip from a law enforcement agency in California.
Pending the completion of the investigation, Andersen has been suspended from all team-related activities by the Denver Nuggets. Investigation: The Internet Crimes Against Children Unit (ICAC) searched the home of NBA player Chris 'Birdman' Andersen in connection with child pornography
Sergeant Ron Hanavan told the Mail Online that the ICAC confiscated property from Andersen's Red Hill Road estate that they believe is connected to a case.
The ICAC investigates crimes ranging from the exchange of pornographic images to child prostitution.
Sergeant Hanavan said that no arrests have been made at this time.
'We need to complete a thorough investigation to determine what, if any appropriate charges would be forwarded to the District Attorney for prosecution,' Sergeant Hanavan said to the Mail Online.
The Denver Nuggets have cut ties with Andersen pending the results.
'The Denver Nuggets are aware of today's media reports involving forward/center Chris Andersen. It involves a legal investigation and we are awaiting further details,' team officials wrote in an unsigned statement to the Denver Post.
'Per team policy, the Nuggets will not comment on any ongoing legal circumstance involving any player or employee.'
This year marks Andersen's 10th in the NBA and his seventh season in Denver.
The forward has a history of getting involved in children’s charities, according to the Daily News.
Andersen has raised money for Mount Saint Vincent, a sanctuary for abused children, and the Alliance for Choice in Education (ACE), which provides funding for low-income families to send their children to private schools.
In 2009, he dressed up as Santa to assist in ACE's holiday fundraising drive, since his middle name is Claus.
Sergeant Hanavan told the Mail Online that Andersen has been cooperating.
His attorney, Mark Bryant, released a statement on his behalf.
'I believe in Chris. I would ask the citizens of Colorado to give Chris his due,' Mr Bryant wrote to the Denver Post.
'Like every one of us, he is presumed innocent. At the end of the day, I am confident it will be shown that he did nothing wrong.'
Andersen was previously banned from the NBA in 2006 for violating the league's drug policy. Source