New Delhi, Feb. 16: The explosives used in attacks in Thailand and India appear to be different, Union home ministry sources said today.

The claim came on a day Thailand announced that three Iranians detained after accidentally setting off explosives in Bangkok were planning to attack Israeli diplomats.

AP quoted Thai national police chief Gen. Prewpan Dhmapong as saying in Bangkok that the authorities there now “know for certain that (the target) was Israeli diplomats”. “This issue was about individuals and the targets were specific,” he said. “This was something personal.”

In New Delhi, a senior home ministry official said: “C4, a military explosive which contains over 95 per cent RDX, was used in Thailand. But according to the Central Forensic Science Laboratory’s preliminary report, only potassium chlorate with some traces of nitrate were found in the sticky bomb which was used to target the Israel embassy’s car in Delhi. The CFSL will send the detailed report to us on Friday.”

Indian authorities today got inputs from their counterparts in Thailand that confirmed the use of C4 explosive in the blasts there.

“There are no similarities between the two (explosives used in Delhi and Bangkok). Had it been C4 explosive, the Israeli embassy car would have been blown away,” the official said, adding that investigators were yet to get any reports from Georgia.

“Thailand security agencies have also got details of the people involved in the Bangkok attacks. But there is no headway in the investigations in Georgia,” the official said. “Our case is still open and we have not been able to identify the person who was involved in the attack on the Innova.”

Delhi police commissioner B.K. Gupta today said: “Investigations are in the initial stage but it is gathering pace. We are carrying out a detailed investigation and other security agencies are also helping us in the matter. The CFSL report is yet to come and we will divulge details as soon as we get to know.”

Israeli officials, according to a senior Intelligence Bureau source, today again told Indian investigators about Iran links to the blast but couldn’t come up with specific information to corroborate it.

“The Indian security agencies are under pressure to crack the case fast but before achieving a breakthrough, we cannot afford to point fingers at anybody. The Israeli officials have not come up with specific information to corroborate the allegations. Besides, nothing conclusive has emerged from CCTV’s footage,” the intelligence officer said.

A source in Delhi police said the composition of the sticky bomb was so unfamiliar that officers had little option but to downloaded information from the Internet.

“This is the first such incident in India in which a magnetic bomb was used. Our initial source of information was the Internet,” an officer said.