sentences:  Since 2011, terrorist attacks seemed to shift from targeting foreign Western interests and residents to attacking Indonesian police officers.The Indonesian Police had success in cracking down on terrorist cells, and in retaliation a new terrorist cell, identified as the "Cirebon Cell", began targeting police officers.On 15 April 2011 a suicide bomber detonated an explosive device in a mosque in a police compound in the city of Cirebon, West Java, during Friday prayers.