The source said that the PACE delegation consisting of 27 members will monitor the election in Ukraine together with representatives from the Organization for Security and Cooperation in Europe (OSCE) and NATO.
Ukrainian President Viktor Yushchenko issued three decrees dissolving parliament in the spring after 11 opposition members defected to the ruling coalition, bringing it closer to a 300-member majority able to override presidential vetoes.
The president's decrees were challenged by the Supreme Rada and eventually his longtime rival, pro-Russian Prime Minister Viktor Yanukovych, struck a deal to hold early parliamentary elections on September 30 in a bid to end months of political wrangling.
The source added that during their stay in Ukraine PACE delegates will meet with representatives of political parties running for parliament, members of the Ukrainian Central Election Commission and will visit polling stations on September 30.
