Israeli diplomat's wife was the target of the bomb that was planted on an embassy car at the Aurangzeb Road crossing which also left the driver and two passersby wounded, home minister P Chidambaram said on Tuesday."It appears that a motorcycle-borne person came from behind and attached the device in the car. A very well-trained person committed the act," Chidambaram said."It was a terrorist attack," confirmed the Union home minister. "Investigations are on," added the home minister.