Pakistan has refused to handover a Belgian citizen arrested in Lahore to his country until the completion of an investigation. Interior Ministry sources said on Thursday that security agencies were interrogating the Belgian citizen, Michael, and had unearthed "important information" during their investigation. "These revelations are very important to Pakistan," the sources said, but refused to disclose the information. The Belgian ambassador to Pakistan had recently called on Interior Minister Aftab Ahmed Sherpao and demanded that the Belgian be released soon. He said that the man had been arrested by Pakistan on the Belgian government's request and so should be handed over. Pakistan and Belgium do not have an extradition treaty.