The European Parliament's observation mission, consisting of former Polish President Alexander Kwasniewski and former European Parliament President Pat Cox, will return to Ukraine next week, a presidential adviser and Head of the Main Department on Foreign Relations at the Presidential Administration, Andriy Honcharuk, has said

"Next week, at the end of the week to be precise, the observation mission of Cos and Kwasniewski will return to Ukraine," he told a press briefing in Kyiv on Friday.

According to Honcharuk, the members of the mission will hold a wide range of meetings.

"They have requested a wide range of meetings with the Ukrainian authorities, as well as public activists," he said, asked whether the imprisonment of former Ukrainian Prime Minister Yulia Tymoshenko and former Interior Minister of Ukraine Yuriy Lutsenko would be raised during the EU-Ukraine Summit due on February 25 in Brussels.

Honcharuk also said that issue of Tymoshenko and Lutsenko has being going on for some time.

"I don't even want to compare how much time has been spent on discussions and reports on the issue against the background of other issues," he said.

The presidential adviser said that if anyone has questions on the issue, Ukraine will answer them.

The Cox-Kwasniewski mission on the Tymoshenko case started to work in Ukraine on June 11, 2012. Ukrainian Prime Minister Mykola Azarov and EP President Martin Schulz reached relevant agreements.

Later on, the mission's mandate was expanded to the Lutsenko case and the trial on former Acting Defense Minister of Ukraine Valeriy Ivaschenko.

The mission's activities were suspended during the parliamentary elections in Ukraine and resumed after them.