Farouk Arnaz – Three more people with links to a high-profile terror suspect have been arrested by the police's Densus 88 counterterrorism unit, officials said on Monday.

National Police spokesman Insp. Gen. Saud Usman Nasution said the three suspects were arrested in an operation on Sunday. They are believed to have ties to Abu Umar, who was arrested in July and has been linked to a number of terror plots.

"The three who were arrested were D., alias M., a vegetable vendor from Duren Sawit, East Jakarta; S., a fried rice seller from Jatirahayu, Bekasi; and another man who is still being identified," Saud said on Monday.

Police on Saturday arrested D.A.P. (34), B.H., alias D. (35), A. (31) and S. in different locations in Banten and North Jakarta. One of the suspects arrested on Saturday was shot in the leg after he attempted to open fire on police officers with an M16 assault rifle.

Sr. Comr. Boy Rafli Amar, another National Police spokesman, said all seven suspects arrested over the weekend were linked to Abu Umar.

The 41-year-old Umar, who also goes by the names Muhammad Ichwan, Zulfikar, Abdullah, Indra Kusuma, Andi Yunus and Nico Salman, was arrested after being on the run for more than six years. He is accused of plotting an attack on former Religious Affairs Minister Matori Abdul Djalil.

Police learned of his whereabouts after breaking up an arms-smuggling syndicate from Mindanao, in the southern Philippines, which had been providing weapons for militant groups in Indonesia. Umar was arrested at his home in Bogor. Police also seized a handgun and 50 rounds of ammunition. On Saturday, police confiscated one M16 rifle and 300 rounds of ammunition.

"So far, Densus 88 has seized four firearms – two M16s and two handguns – and hundreds of rounds of ammunition," Boy said. "The seven suspects are currently being investigated."

Saud added that the police believed the suspects arrested on Saturday had stashed weapons in the woods inside the University of Indonesia complex in Depok, just south of Jakarta.

"Based on our initial interrogation, the suspect B.H. received firearms from A. along with 20 rounds of ammunition. The evidence was hidden, buried in the woods in Depok," he said.

Several documents were also seized from the suspects, Boy said, suggesting that they were plotting an attack against police headquarters in West Jakarta. He added that there had also been reports that the group had been preparing to attack the Singaporean Embassy in Jakarta.

Boy said there was no indication when they had planned to carry out the attacks, but added that they did not appear to have been aimed at disrupting the Asean summit in Bali this week.

A large number of heads of state and other dignitaries are scheduled to attend the summit, including US President Barack Obama and UN Secretary General Ban Ki-moon.