COPENHAGEN, Denmark (AP) — Police say a gunman who killed three people when he opened fire in a crowded shopping mall acted alone and apparently selected his victims at random. They all but ruled out that Sunday’s attack was related to terrorism. Authorities on Monday filed preliminary charges of murder and attempted murder against a 22-year-old Danish man. Prosecutor Søren Harbo told reporters that the man will be held for 24 days in a secure mental health facility while authorities investigate the crime. After the custody hearing, defense lawyer Luise Høj said she agreed to have her client undergo a mental exam. She did not comment on the charges.