The Love Bug investigation continues, with the Philippines National Bureau of Investigation (NBI) concentrating on students at Manila’s AMA Computer College, and analyzing 17 floppy discs retrieved from a suspect’s home.

"We are confident we will find the guilty party," said Carlos S Caabay, deputy director for special investigative services at the NBI. He could not confirm that the prime suspects are either Onel de Guzman, Reomel Ramones, or Michael Buen, all of whom have previously been named as suspects in the case.

Scrutiny Caabay said: "The investigation is on-going. Our experts are examining the 17 diskettes with assistance from agents from the US embassy. We will give a report to our director on Monday.

"To be perfectly clear, this has been very encouraging, and we are confident we will file cases against people on the basis of this report."

Caabay didn't want to name any suspects, but he said it was likely that one or two guilty people were students at the AMA Computer College in Manila.

Onel de Guzman and his sister Irene de Guzman own the house where the NBI found the diskettes in a raid conducted on Monday. Following this raid, resident Reomel Ramones, who is also said to be Irene de Guzman's boyfriend, was arrested and later released due to lack of evidence.

So far, the virus is thought to have cost as much as $10 billion worldwide, mainly due to companies' loss of productivity.