Hyderabad, May 29 (IANS): YSR Congress party's honorary president Y.S. Vijayamma Tuesday said the party would fight till justice is done to her son Y.S. Jaganmohan Reddy, who is in jail for one year in an illegal assets case.

Vijayamma, Jaganmohan Reddy's wife Y.S. Bharathi along with several other leaders staged a day-long fast here to protest what they called the continued undemocratic detention of Jagan, as the Kadapa MP is popularly known.

Vijayamma lashed out at Central Bureau of Investigation (CBI), the Congress and the Telugu Desam Party (TDP) for their joint conspiracy.

"It is time that we come out in the open and initiate steps to see that justice is done to Jagan," she said.

"Their combined effort could hardly bring out any evidence against him while the nexus was thoroughly exposed during the past two months," she added.

Vijayamma claimed that Jagan has done nothing wrong and that he was detained with political motives.

The 22-month inquiry could prove nothing against Jagan in the state while CBI style of functioning has come under scanner at the national level with its reports being tampered with by the law ministry and the Prime Minister's Office, she said.

"The CBI has lost its face with the exposure and it has been behaving in an irrational manner in Jagan's case by filing multiple chargesheets preceded by an undemocratic arrest," Vijayamma added.