Thai police have confirmed that the explosives that injured an Iranian man earlier this week were meant for Israeli diplomats.
Israel has already made public its belief that Iran was behind the botched attack in Bangkok, another failed one in Georgia and a blast in Delhi on Monday.
Three Iranian men have been arrested in connection with the incident in Thailand, in which one of the attackers accidentally had his legs torn off in an explosion as he fled the scene.
Thailand's police chief, Prewpan Dhamapong, said that the devices used in Delhi and Bangkok were similar. He said: "This issue was about individuals and the targets were specific. This was something personal."
Israeli Defence Minister Ehud Barak and Prime Minister Benjamin Netanyahu, have already accused Iran, or its proxy Hizbollah, of perpetrating the attacks.
Ron Prosor, the former Israeli ambassador to Britain and now Israel's envoy to the UN, called on the Security Council to condemn the attacks.
In a letter, Mr Prosor said: "Israel expects [the Security Council] to issue a clear condemnation today, without any further delay or equivocation.
"This campaign bears the unmistakable fingerprints of the Iranian regime and the highest echelons of the Hizbollah leadership.
"Their actions constitute a clear threat to the security and stability of Lebanon, to the Middle East, and to the many countries that have been targeted."
Tal Yehoshua-Koren, the wife of an Israeli diplomat who was injured in the Delhi bomb as she picked her children up from school, has had surgery on her spine and liver and is said to be recovering well.