Metro TV reported that after the white minivan crashed into the entrance gate, three men armed with swords jumped out and started attacking several police officers.
Local police initially said they had killed three people and wounded another.
One of the dead men had a suspected bomb strapped to his body, the report said. Police updates have stated that there were five attackers, and that four were shot dead at the scene.
It is said to be the deadliest since the 2002 Bali attack.
No group has taken responsibility so far.
He said the men had driven their vehicle into the police yard before getting out to stage the attack.
The attack comes as the Southeast Asian nation has been rocked by a series of deadly attacks on churches and a police station, involving multiple suicide bombings carried out by families, including young children. Both groups have pledged allegiance to IS, they said.
All six bombers were killed, including the mother who was Indonesia's first known female suicide bomber.
The militants also rampantly shot at the headquarters, according to national police spokesman Senior Commissioner Muhammad Iqbal.
"They had the same teacher and they regularly met for Koran recital every week", said East Java police chief Machfud Arifin, adding that police were pursuing the teacher for questioning.
Police have said the church and earlier police station attacks were motivated by the arrest of JAD leaders, including jailed radical Aman Abdurrahman.
Police suspect they were carried out by a cell of the Islamic State-inspired group Jemaah Ansharut Daulah (JAD), an umbrella organization on a U.S. State Department terrorist list that is reckoned to have drawn hundreds of Indonesian sympathizers of Islamic State.
More: Spy games: Is buying a Chinese smartphone risky? It's also the fourth largest provider of smartphones in the United States. Trump's offer for aid comes at a moment of sky-high trade tensions between the United States and China.
Six people in Pennsylvania have gotten sick from a national shell egg salmonella outbreak, according to the U.S. The Food and Drug Administration has a list of all of the recalled brands on its outbreak investigation page .
One cabinet minister told the Guardian: "The prime minister wants to find a way through this that keeps the party together". He also wrote in The Spectator that it is time for the government to end the circular discussions on customs unions.
The meeting between Moon and Kim resulted in few specifics and was largely seen as a prelude to the first-ever U.S. The shutdown process will unfold under the presences of journalists, including those from the US and South Korea.
That's been the story of the TPC Sawgrass over the years - a design that doesn't favour one particular style of play. On the 393-yard par-4 sixth hole, Cook reached the green in 2 and sunk a sub 1-foot putt for birdie.
Two of the injured people had unknown injuries, and the third person suffered smoke-inhalation, according to officials . The county's bomb squad and a hazmat team are preparing to search the building where the explosion occurred.
The shirt could not be found on Gap websites and it wasn't clear whether it was still being sold in shops in some countries. A series of other big Western brands have apologized over missteps on Chinese territorial issues.
What will the final count be? Facebook closed that loophole in 2014, but clearly wants to avoid another data privacy scandal. Where we find evidence that these or other apps did misuse data, we will ban them and notify people via this website .
On the eve of the Trump decision, all we could do is to tell the Iranians: "don't do anything rash", the diplomat said. Tehran dismissed Netanyahu as "the boy who cried wolf" and called his presentation propaganda.
Women should have got angrier sooner: Hayek
The Mexican-born star subsequently claimed that one way to achieve equality would be for actors to spurn "inflated fees". Hayek said Weinstein's direct responses were only to herself, and the accusations lodged against him by Nyong'o .
Amazon Go stores are coming to Chicago and San Francisco
There are no cashiers but there are plenty of human employees restocking shelves, checking ID for wines, and working security. In addition to these two new locations, there are allegedly still a few more Amazon Go stores waiting to be built.
130m-wide Lost asteroid to zoom past Earth today
Asteroid 2010 WC9 is only a fraction of the size of the rock that caused the mass extinction event that killed off the dinosaurs. It is being said that the space rock has completed its orbit and now comes back to the Earth.