FILE - This is a April 13, 2017 file photo of a Finnish police officer carrying a MP5 submachine gun patrols at the Helsinki-Vantaa airport in Vantaa Finland . Finnish police officers will soon have MP5 submachine guns in addition to their normal equipment. An official with Finland's top police body said Friday Sept. 1, 2017 the increased terror threat is the main reason for the upgrade. (Jussi Nukari/Lehtikuva, File via AP)

COPENHAGEN — Police in Finland released a third suspect Friday in a fatal stabbing attack allegedly carried out by a Moroccan asylum-seeker, a development that came hours after the Nordic country’s news agency said officers will be issued MP5 submachine guns in addition to their normal equipment.
The released man was arrested a week ago on suspicion of helping plan the Aug. 18 attack that killed two people and injured eight, the National Bureau of Investigation said.
Two other Moroccans who also had been detained as suspects were released earlier this week.
None of them still are considered suspects, the bureau said.
The main suspect — a Moroccan asylum-seeker whose application was denied — is being held on suspicion of murder and attempted murder with terrorist intent.
Investigators said he had become radicalized, but did not elaborate. He also had given a false name and age when he first was interviewed.
Investigators have said they weren’t …