The arrests were part of a large-scale operation carried out throughout the country and in conjunction with various border police units.
The man reportedly set fire to two buildings, before ramming a store with a van and threatening people with machetes.
The suspect, 62-year-old Boaz Gilad, has been arrested and questioned.
Norwegian security police investigate potential links between a Norwegian-owned company and pagers used in recent Hezbollah attacks in Lebanon.
Israel Police opened an investigation into a social media post inciting violence against Prime Minister Netanyahu, possibly from an overseas source.
He is suspected of transferring funds through his personal businesses, including a chain of supermarkets in Shu'afat and Anata.
Two Hadera residents were arrested for involvement in the attempted assassination of a senior intelligence target, with more arrests expected.