Security forces have detained a suspect in connection with bomb explosions set off in a botched bank robbery in southern Ukraine, a senior government minister said on Wednesday, Reuters reported.

The two blasts on Tuesday injured more than 20 people in a branch of the state savings bank Oshchadbank in the southern town of Melitopol.

First Deputy Prime Minister Oleksander Turchynov told a news conference two robbers had planned to seize cash from the bank and escape under cover of the confusion caused by the two explosions. But the first blast proved too powerful and they fled.

Turchynov said the suspect was giving evidence to investigators in connection with the incident and charges had already been laid.