Tehran police chief says clips 'play with people’s nerves, security and peace'; prankster defends actions, says he 'only wanted to make people happy and gain more followers'

Footage of gag goes viral with bamboozled residents of Israel's second city queuing up to take photos with group from Kafr Qasim

State security investigating how Vladimir Kuznetsov got through to Andrzej Duda and whether Russia's secret services were involved

Joke gets out of hand when Facebook user posts picture from film, asks for help identifying subjects, but recalls efforts to reunite Jews separated by Holocaust, other tragedies

Police official says culprits claimed clip accidentally released online; media reports Iranian who lives in Canada but was visiting country believed to have created footage

Ireland's Shay Bradley, who died of cancer, lightens the mood by having his son play a recording appearing to come from inside the coffin