A small bomb exploded Wednesday outside the house of an Indonesian cleric accused by the United States of being a senior member of the Jemaah Islamiyah terror network, police said. No one was injured in the attack. Indonesian police were investigating the blast at the house of Abu Jibril on the southern outskirts of the capital, Jakarta, a national police spokesman said. The blast, which occurred shortly before dawn, caused no damage to the house, said Fauzan Anshorim, a spokesman for Jibril. Jibril was praying at a local mosque when the blast occurred, Anshorim said. "We suspect this was act of terror to intimidate (Jibril) into stopping his campaign for an Islamic state in Indonesia,'' Anshorim told The Associated Press. In 2003, the United States blocked Jibril's assets and called him the "primary recruiter and second in command'' of Southeast Asia's al-Qaida-linked terror group, Jemaah Islamiyah. Indonesian police say they are monitoring the cleric's activities, but have no evidence to charge him with terrorism. Jibril, 47, regularly preaches sermons in which he calls for the overthrow of Indonesia's secular government, but in a recent interview with The AP denied any links to terrorism. He was arrested in Malaysia in June 2001 for alleged militant activities but was released in 2003.