Two blasts in Tbilisi overnight on November 28, which killed a woman, was an attempt by external forces to portray Georgia as unstable state, Davit Bakradze, the Georgian parliamentary speaker, said on Monday.

"There are forces outside the country [Georgia], which are interested in portraying Georgia as unstable state. These forces have nothing else left, except of this type of physical attacks. I want to disappoint them and say that they have less and less chances of doing that," Bakradze said while speaking at a session of the parliamentary bureau.

Police said on November 28 that same, unspecified explosive substance was used in two explosions in separate locations of Tbilisi - one took place in one of the central parts of the capital city, outside the opposition Labor Party's office and another one in the suburb, about hour and a half later, at 2:56am local time.

The Interior Ministry said that the case was investigated under the first part of 229 article of criminal code, which deals with cases of a deliberate act of explosion of gasoline, gas or other materials with a goal to damage property or to harm lives of others.