Zale H. Thompson charged at four New York police officers with a metal hatchet Thursday , hitting two of them . NEW : No link seen between assailant and radical the Islamic State , senior law officer says . Nathan Cirillo swung a hatchet at two police officers in Tunisia , wounding four . The other two shot him dead , authorities say .
NEW : No link seen between assailant and radical the Islamic State , senior law officer says . Nathan Cirillo swung a hatchet at two police officers in Tunisia , wounding four . The other two shot him dead , authorities say .