A top Indonesian official says Prime Minister Kevin Rudd's plan to pay Indonesia to intercept asylum seekers will top $50 million.

The price tag was revealed after another asylum seeker boat made its way into Australian waters this afternoon, taking the number of boats intercepted to four this week.

The 33 passengers and crew are now on their way to Christmas Island.

Indonesia's director-general of immigration has told the ABC Indonesia will need at least $50 million to adequately process asylum seekers.

"We need much more funding for advanced passenger processing development," he said.

"For one checkpoint we need at least $10 million and we have at least five checkpoints."

But the Australian Government will not confirm the amount. Home Affairs Minister Brendan O'Connor says Australia will continue working with INdonesia on the issue.

"And we'll continue to provide resources to assist our friends as they assist us in combating this regional problem," Mr O'Connor said.

Indonesian authorities have now diverted the Oceanic Viking, with its cargo of 78 asylum seekers who were rescued last weekend.

The 78 Sri Lankan asylum seekers on board the Oceanic Viking are now on their way to a detention centre on the Indonesian island of Bintan, close to Singapore.

Abuse claims

The centre was built using Australian money, but the current residents have not given it a glowing review.

"During the night about 2:00 am, midnight, they come and hit some people. They choose us one by one and hit some people," one detainee said.

The local immigration authorities say the allegations are unfounded.

The Oceanic Viking was originally set to dock in Merak in western Java, but it was diverted by the Indonesian authorities and will not arrive at its new destination for at least two days.

Home Affairs Minister Brendan O'Connor says it is up to Indonesia to decide where they want the asylum seekers.

"They're the lead agency and it's in Indonesian territory now and so of course they will determine the port," he said.

Meanwhile, Human Rights Commission spokeswoman Cathy Branson says facilities at the Christmas Island detention centre are already inappropriate and will not cope with the latest increase in detainees.

The problems will be exacerbated. There is limited infrastructure on Christmas Island," she said.

"There is not a permanent psychiatrist on the island, for example, so that counselling for trauma and torture is difficult."

The Government has no intention of closing Christmas Island and ending mandatory detention.

It says it is an essential element of border control.