<p>Hyderabad: Three persons were killed and an equal number suffered injuries in a blast in an explosives manufacturing factory in the Yadadri-Bhuvanagiri district of Telangana Tuesday evening, police said.</p>.<p>The blast occurred at a unit, where propellant is manufactured, leading to the tragedy. It was not immediately clear how the blast occurred, they said.</p>.Three killed in massive blast at UP firecracker factory.<p>Those injured were undergoing treatment in a hospital, police said.</p>.<p>In January this year, one person was killed and three others suffered injuries in a blast in a factory, involved in the production of explosive materials, in the district. </p>
<p>Hyderabad: Three persons were killed and an equal number suffered injuries in a blast in an explosives manufacturing factory in the Yadadri-Bhuvanagiri district of Telangana Tuesday evening, police said.</p>.<p>The blast occurred at a unit, where propellant is manufactured, leading to the tragedy. It was not immediately clear how the blast occurred, they said.</p>.Three killed in massive blast at UP firecracker factory.<p>Those injured were undergoing treatment in a hospital, police said.</p>.<p>In January this year, one person was killed and three others suffered injuries in a blast in a factory, involved in the production of explosive materials, in the district. </p>