Ukrainian President Petro Porosehnko is visiting Bulgaria's capital Sofia on Thursday to meet counterpart Rosen Plevneliev and discuss bilateral issues, the latter's press office has said.

Issues such as economic and investment cooperation, regional and international security, and specific bilateral documents will be on the agenda, Plevneliev's press office has said.

The two heads of state will also attend the signing of cooperation agreements in sports and astronomy between the respective state agencies.

During Poroshenko's one-day visit, a monument to Ukrainian national hero Taras Shevchenko will be unveiled in the center of Sofia.