On April 19, he confessed during a Shin Bet interrogation that for months, he had been collecting intelligence on senior Israeli officials - including Olmert and a number of Knesset members.
Bashir met with the Popular Front for the Liberation of Palestine in September 2006, and said that the assassination was meant to avenge the deaths of Palestinian civilians.
Bashir also underwent arms training with the PFLP, and was picked to carry out the planned assassination.
He told the Shin Bet that he had collected information on the Internet to use to target MKs, but then realized that the MKs in question did not live in Jerusalem, the only Israeli city to which his permit granted him access.
According to the officials, after the doctor realized that the security surrounding Olmert was impenetrable, Bashir decided in December 2006 to kill David Be'eri, head of the Elad organization, a group involved in purchasing Arab homes in Jerusalem's Old City.
That same month, he underwent combat training in the Gaza Strip in order to learn to kill without using weapons.
In January 2007, Bashir again entered Israel again on behalf of Doctors Without Borders, and began collecting information on Be'eri. He made additional trips to Jerusalem in February and March, and on April 18. He was arrested on April 19.
During his interrogation, Bashir said he had planned to return to Gaza to complete his combat training and learn, among other things, how to break necks. He said he intended to use his skills to kill Be'eri.
Elad has increased Be'eri's security following the threats to his life.
Bashir was indicted Thursday in the Jerusalem District Court.