The YSR Congress Party, a regional political party in the states of Andhra Pradesh (AP) and Telangana, on Thursday filed a complaint against AP Chief Minister and TDP party chief N Chandrababu Naidu for threatening the state's chief electoral officer (CEO).In its complaint, the YSR Congress Party, led by Jagan Mohan Reddy, alleged Naidu of threatening the CEO and questioning the Election Commission rules."Who is verifying facts I am asking. He is verifying in Delhi. Then I will see in Delhi. Who is election commission? Bring two machines and start rigging and complete elections, we will sleep in home. Why should we work and why this material. Why are you following instructions from Delhi. You are not a post office, you are having power. Abolish everything and remove everyone and let him have one clerk. I will see what is election commission. Once I take up this matter I will not leave easily and see to its logical end," Naidu had said.The YSR Congress Party alleged that Naidu went to the office of the state's CEO after the campaign period had ended and had intentionally threatened him, which led to the obstruction of the duties carried out by the election authorities."Such threats are illegal, unwarranted and completely violative of the constitutional principles which mandate a free and fair election in our country," the YSR party wrote in its complaint.Andhra Pradesh went to polls on Thursday, the first out of the seven days of polling for the Lok Sabha Elections 2019. There are a total of 319 candidates and the major parties include BJP, Congress, Telugu Desam Party (TDP), YSR Congress Party (YSRC), Jana Sena. The polling will take place in 25 constituencies.