Iranian media said on Monday the Intelligence Forces had arrested members of a "terrorist group linked to the Zionist regime," who were allegedly behind the assassination of nuclear physics scientist Masoud Ali Mohammadi.

Majid Jamali Fash, a member of the group, said on Tuesday he underwent training in "surveillance, counter-surveillance, car chasing and how to plant a bomb under a car."

"After we left Tel Aviv, it took us 30 minutes to get to the entrance of a garrison which was near Tel Aviv-Bait ul-Moqaddas highway," the agency quoted Fash as saying on its English-language portal.

"They had put two Iranian-made motorcycles and told me where I should take the bombed motorcycle and how I should call a telephone number after that," Fash said.

The Iranian scientist, described as "a staunch supporter" of the Islamic revolution was killed on January 12, 2010, when a remote-controlled explosive device attached to a motorbike was detonated near his home in northern Tehran. Iran blamed Israel and the United States for the murder.

Shortly after the incident, Al Jazeera said Mohammadi, a lecturer at the Tehran University, might have had links to Iran's disputed nuclear program.