The authorities must stay alert for the presence and influence of the Jamaah Anshar Daulah (JAD) terror group, as investigations have found it to be behind several terrorist attacks across Indonesia, a security chief has warned.

National Police chief Gen. Tito Karnavian said the perpetrator of an attack on three members of the Banyumas Police in Central Java on Tuesday was aligned with JAD.

“The attack on the Banyumas Police is related to two previous terror attacks in Lamongan and Tuban, both in East Java. These were all perpetrated by the JAD network,” the police chief said on Wednesday.

He was speaking after he inaugurated the Makassar Police’s command center, which is connected to the command and control center of the Makassar city administration and CCTVs installed in several locations across the city.

(Read also: Three injured as alleged IS supporter attacks police in Central Java)

As earlier reported, a young man attacked police personnel at Banyumas, leaving three officers injured. Riding a motorbike at high speed, the alleged perpetrator, identified as Mohammad Ibnu Dar, 22, a resident of Karangaren village in Kutasari district, Purbalingga regency, Central Java, broke through the front yard of the police office and launched the attack.

Following the Banyumas attack, Tito said authorities must beef up security because JAD leaders had ordered its cells to launch similar attacks. Police personnel, in particular, must stay alert because police officers are the group’s target, he added.

“The Densus 88 counterterrorism unit and all regional police commands must work together to trace and cut out JAD cells.” (ebf)