(ANSA) - BRATISLAVA, MAR 3 - The Slovak police have released all the seven Italians arrested over the murder of journalist Jan Kuciak, according to police, explaining that the custody period (48 hours) has expired, without evidence for formal accusation. The head of the Slovak police, Tibor Gaspar, announced that, with regard to the murder of journalist Jan Kuciak, police are working on a new investigation. At the same time, he has said that he never received information from Italy on the activity of the 'ndrangheta in the east of Slovakia as declared by the Reggio Calabria acting prosecutor Gaetano Paci who said that "for some time we have officially drawn the attention of the international police forces and the Slovak national police on the need to monitor the activities of the group of Calabrians arrested because they are suspected of being involved in the murder of the young journalist Jan Kuciack and his partner". "It is not true that the Slovak police did not react to warnings from the Italian prosecutors. I do not understand why misleading information is being spread", Gaspar said. The Slovak public prosecutor also declared that he has not yet received any warning. "In February 2014 we urged the Italian police to give us information. The investigator asked them even twice, but we only received it in October 2015", Gaspar added. The police chief did not give any details about the investigation into Kuciak's death and the release of the seven Italians arrested, not even about the new investigation.(ANSA).