“Heavy war weapons” were removed from the Berlin apartment of suspected far-left RAF terrorist Daniela Klette on Thursday as the son of a man the group famously murdered said it was “unbelievable” it had taken so long to capture her. The 65-year-old had been on the run for 30 years and was arrested at the flat on Monday having been living there under a false identity. A search of the flat concluded on Thursday with explosives, an anti-tank grenade, a Kalashnikov, a machine pistol and a handgun discovered along with ammunition, described by prosecutors as “heavy war weapons.” Experts removed th…