Russian security forces have discovered a homemade bomb in the Moscow apartment of a man linked to the St.Petersburg terror attack.
Officers raided the home of Muhammadyusup Ermatov after arresting his brother Ibragimzhon on Thursday, Russia's Interfax news agency reported. Both men are being held for terror offenses.
Prosecutors told Moscow's Basmanny Court that police had uncovered a bomb made from a fire extinguisher, similar to the device detonated on the St. Petersburg metro on April 3.
Fifteen people died when Kyrgyz-born Russian citizen Akbarjon Dzhalilov detonated a homemade bomb on the St. Peterburg metro on April 3.
Ten people have been arrested in the case so far, including six people in St. Petersburg and four people in the capital.