WASHINGTON ( CNN ) -- The FBI says it found child pornography on a computer used by the man charged with the fatal shooting of a security guard at the U.S . Holocaust Memorial Museum June 10 . Museum shooting suspect James von Brunn remains in a Washington hospital . In court documents filed Wednesday , an investigator says the pornography was found on a desktop computer during a search of an Annapolis , Maryland , apartment where 88-year old James von Brunn had been living for the past two years . The documents did not provide details about the pornography , but investigators requested permission to make a more extensive search of the computer and others found in von Brunn 's home . Von Brunn has been charged with the murder of museum security guard Stephen Johns . The white supremacist was shot in the face after two other security officers returned fire . He remains in a Washington hospital . The FBI also searched a red Hyundai that law enforcement officials say von Brunn left double-parked in front of the museum right before the shooting . In separate documents also filed on Wednesday , investigators say they found 35 rounds of live ammunition for a .22 caliber rifle . Officials allege von Brunn used a .22 caliber rifle , which was found at the scene , to shoot Johns in the chest . According to paperwork detailing the car search , investigators found business cards advertising a USS Liberty Web site that claims Israeli forces `` suddenly and brutally '' attacked the U.S. Navy vessel in international waters in 1967 . Investigators also found business cards for von Brunn 's own Web site , which hosts postings of white supremacist writings . Among other items found in the car were a disabled parking permit , mouthwash , a salt shaker and a roll of quarters totaling $ 7.25 . Earlier this week investigators filed papers saying among the items discovered in von Brunn 's apartment was a painting that appeared to depict Hitler and Jesus . They also found a .30-30 rifle , ammunition and a handwritten will .
Computer found in apartment of the old James von Brunn . FBI asks for more extensive search of the computers found in von Brunn 's home . FBI also searches von Braun 's car ; finds a for 50 caliber rifle .