Police detained the suspect, an Irish citizen, on the evening of Nov. 7. Investigators said that Michalski and the suspect met at a nightclub and danced before leaving for the man's rented apartment. The man killed Michalski while they were engaged in an "intimate encounter," police said.
"At present, it is not possible to establish exactly how the victim was killed and this is the subject of the ongoing investigation," the court said Monday.
The suspect, whom police identified by the initials L.T.M., confessed to the killing, but said it had been an accident. Police said that he had attempted to cover up his crime by cleaning the apartment and hiding Michalski's body in a wardrobe before purchasing a suitcase and placing her body inside.
He then rented a car and drove to Lake Balaton, around 90 miles southwest of Budapest, where he disposed of the body in a wooden area outside the town of Szigliget.
Video released by police showed the suspect guiding authorities to the location where he had left the body. Police said the suspect had made internet searches before being apprehended on how to dispose of a body, police procedures in missing person cases, whether pigs really eat dead bodies, and the presence of wild boars in the Lake Balaton area.
He also made an internet search inquiring on the competence of Budapest police.