Russian news agency reported on Thursday that "Aminchun Islamov and his father, Isruil Islamov, who are among eight individuals arrested on suspicion of involvement in last week's attack on a concert hall in Moscow, have filed an appeal against their pre-trial detention. The Islamov family, consisting of brothers Aminchun and Dilovar and their father Isruil, a citizen of Tajikistan, is suspected of having assisted the four Tajik nationals accused of carrying out the attack on the Crocus Hall, which resulted in the deaths of at least 143 people."