Langha was booked last night after the 35-year-old complainant alleged that the Akali leader had raped her repeatedly since 2009.
The former minister said the charge against him is "a classic example of political vendetta perpetuated at the most opportune moment" and announced that he would surrender before a court tomorrow.
"The victim alleged that she was raped repeatedly by Langha since 2009 and was threatened by him to not disclose it to anyone. The victim also gave a pen drive with a video recording to support her accusations," Senior Superintendent of Police (SSP) Harcharan Singh Bhullar said.
The SAD leader alleged that the rape case was an attempt to keep him away from the election campaign for the upcoming Gurdaspur by-election.
"As a responsible citizen, I forthwith resign from all party posts and from the membership of SGPC," said Langha, who served as the agriculture minister in the Akali Dal government from 2007 to 2012.
SAD president Sukhbir Singh Badal said he had accepted Langah's resignation with immediate effect.
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