BISHKEK. Specialists from the international anti-terrorism coalition based at Gansi airbase in the 'Manas' airport are investigating the remains of inflammable materials brought from Dordoi market blast's site. Preliminary investigation says the remains belong to a unknown explosive substance. The state commission is continuing the investigation of the cause of the blast of the container in which the explosives apparently was hidden. Seven people died in the blast at the busy market in the capital Bishkek on December 27, 2002. Health officials say 50 people were injured in the blast and 23 are still in hospital. The office of Bishkek's mayor gave 500,000 soms to help treat the injured people. The firm 'Oberon' allocated an additional 200,000 soms. Today the Kyrgyz government expressed its deep condolences to families and relatives of the blast victims and promised to bring those responsible to justice.