DES MOINES — A former men’s basketball assistant coach was charged Monday with possession of child pornography, related material and obstruction of justice by the U.S. District Court.

In an affidavit filed with the Southern District of Iowa in Des Moines on Monday, U.S. Postal inspector Kevin Marshall stated Randy Brown admitted to having nude images of minors, who he believed were about 15 years old, when he was questioned by authorities Jan. 24.

Brown resigned from his position at Iowa State Monday after the charges were filed.

“Randy Brown has resigned from his position as assistant men’s basketball coach, effective immediately,” said Larry Eustachy, men’s head basketball coach, in a written statement Monday. “Iowa State University has accepted his resignation.”

Brown said he had saved the images on floppy disks, according to the affidavit. A search of Brown’s home, 3827 Berkshire Ave., and office, 383 Hilton Coliseum, completed on Jan. 24 produced computer disks containing images of minors engaging in sexual activities.

Marshall said Brown destroyed about 30 other computer disks containing images of minors engaging in sexual activities at his office in the afternoon on Jan. 24.

Marshall said in the affidavit Brown stated he destroyed the disks because “he was concerned someone would find evidence on the disks.”

Marshall said he first approached Brown at about 2 p.m. Jan. 24 and requested an interview at Brown’s office. Brown agreed to cooperate with authorities and took them back to his home, Marshall said in the affidavit. Marshall said Brown surrendered two computers at his home to the postal authorities and ISU Police.

Brown then returned to Hilton Coliseum to attend a men’s basketball practice, Marshall said. It was during this time Marshall said Brown destroyed the computer disks, even though he had been advised by Marshall not to do so.

Marshall conducted an interview with Brown after practice, and Marshall said Brown admitted at this time he had downloaded the images. Brown also told Marshall he had destroyed the disks and informed him where the remains of the disk were located, according to the affidavit. Authorities then retrieved the remains from a garbage container accessible to the public for later tests.

Brown has been charged with obstruction of justice due to this destruction of evidence, according to court documents.

Marshall also said Brown told him in the interview he had about five more disks at his residence containing images of minors engaging in sexual activities.

Authorities obtained a search warrant on Jan. 24 to search Brown’s office and confiscated an additional computer and computer disks.

According to an ISU Police call log, ISU Police received a call to assist another agency at about 9:15 p.m. Jan. 24 and completed the assist at Hilton Coliseum at 1 a.m.

ISU Police Capt. Gene Deisinger confirmed Monday this call was related to the Brown case. He said ISU Police were involved in assisting with the search warrant. Deisinger said he would not comment on any specifics of the case because ISU Police is not the primary agency handling the case.

The search warrant was sealed by the Story County Clerk’s Office Feb. 3. The warrant was sealed due to the “highly sensitive” nature of the investigation and was not made available to the public.

Linda Jensen, U.S. Postal Inspector, told the Daily in an interview Feb. 6 that the U.S. Postal Inspection Service investigates any cases where a federal statute has been broken that involves the mail. She said they investigate Internet crimes if something has been ordered through the mail or a check has been sent in the mail. “There has to be a mail nexus,” Jensen said.

She was unable to comment at the time about any specific cases.

Attempts to reach Brown by phone on Monday were unsuccessful.