Orlando Bloom allegedly threw a punch at Justin Bieber at Cipriani restaurant in Ibiza, Spain, last night. According to TMZ, the actor took a swing at the pop star and now rumours are rife that the altercation may have been about his ex-wife Miranda Kerr, to whom Bieber has been linked on numerous occasions. While there are conflicting reports about what exactly happened – some say that Bieber made a comment about Kerr while other outlets claim Bloom refused to shake hands with the singer – video footage has emerged confirming that there was an incident of sorts. http://www.youtube.com/watch?v=dxsllb33VIg Video via YouTube/ Time Mongolia The footage does not include the alleged punch but it does show what appears to be the two stars exchanging words. There is also the fact that Bieber shared a picture of Kerr on his Instagram account shortly after running into Bloom. (He later deleted it.) An insider told The Mirror: “Orlando was clearly annoyed when he saw Justin and instigated the situation by taking a swing at him. Luckily for both of them Justin ducked so Orlando’s punch missed. Within seconds people intervened and there was some minor pushing and shoving between their entourages”.