The widow of a murdered Indonesian rights activist called Wednesday for a stepped-up probe into allegations that the man convicted in his poisoning death had links to the state intelligence agency.

On Tuesday a court convicted off-duty pilot Pollycarpus Priyanto of putting a fatal dose of arsenic in food served to Munir Thalib as he flew to Amsterdam on state-owned airline Garuda Indonesia.

In their verdict, judges said Priyanto killed Munir because of his vocal criticism of rights abuses by the military and the government.

They also said that the killer had received many calls from a phone registered to a senior intelligence agent ahead of the murder in September 2004, but did not elaborate.

"The verdict does not answer my questions," said Suciwati Thalib, whose campaign for justice in the case has taken her all over the world. "Now investigators must work hard to uncover (the link to the state intelligence agency)," she said in an interview.

An independent fact-finding team established by the president also revealed phone records showing calls between Priyanto and a phone registered to the agent, Muchdi Purwopranjo. Purwopranjo testified at Priyanto's trial that someone borrowed his phone to make the calls. The intelligence agency refused to speak to the fact-finding team.

The investigation into Thalib's killing is seen as a test of how much Indonesia has changed since the days of Suharto, the dictator who ruled Indonesia for 32 years until democracy riots forced him to resign in 1998.

State-sponsored killings were common during Suharto's regime and military and police officers were largely above the law.

Thalib, 38, rose to prominence toward the end of Suharto's regime. He went on to probe killings by Indonesian troops during East Timor's bloody struggle for independence and military-led violence in the separatist provinces of Papua and Aceh.

The tireless campaigner often received death threats, and his widow say she too has received threats against her life.

She said she continues her campaign because she wants "to ensure this does not happen again and that impunity does not become ingrained in our society." "I am tired because of all this, but I also want to show my children that I did something for their father," she said.