A Georgian man is among the injured in Volgograd tarrorist act

A Georgian man named Anzor Qarchaidze is among the injured people in the second deadly blast to hit the Russian city in 24 hours, according to NTV, the Russin-based TV channel.

Another deadly blast has struck the southern Russian city of Volgograd, killing at least 14 people and further highlighting Russia's security challenges as it readies to host the Winter Olympics in less than six weeks, reports CNN.

An explosion hit a trolleybus near a busy market during the morning rush hour on Monday, only a day after a blast at Volgograd's main train station killed 17 people and wounded at least 35 others.

Like Sunday's attack, the blast Monday was a terrorist act, Vladmir Markin, a spokesman for the country's federal investigation agency, told the state-run news agency RIA Novosti.

No one claimed responsibility for the explosions.

Georgian President Giorgi Margvelashvili and PM Irakli Garibashvili have already expressed their deep sorrow over the terrorist acts "causing death to dozens of innocent citizens in the Russian city of Volgograd.