A total of four people have filed sexual misconduct complaints against Prinn Panitchpakdi, former Democrat deputy leader, according to Pol Maj Gen Trairong Piwpan, deputy commissioner of the Metropolitan Police Bureau.
Three of the complainants filed their reports with Lumpini police in Bangkok, including one case of a student which came to light earlier in the week, while the fourth did so with Muang Phetchaburi police in Phetchaburi province.
Pol Maj Gen Trairong said the Phetchaburi case involves a former Democrat Party official who alleges she was harassed by Mr Prinn in the province two years ago. He said another case involves Anna Hathairat, a former prominent member of the party. He said she filed a rape complaint regarding an incident last year at a condominium in Bangkok.
Ms Anna has called on women who were harassed or assaulted by the suspect to press charges against him.
Rachada Dhnadirek, executive committee member of the Democrat Party, responding to the filing of complaints against Mr Prinn, said the party will support the victims to ensure that the cases against him are seen through to the end.
She also called on the police to expedite their investigation into the matter so the judicial process can start as soon as possible. "I insist the party will not intervene in the case to protect the wrongdoer," Ms Rachada said.
"The party will still adhere to its determination to suppress threats, sexual harassment, domestic violence and discrimination," she added.
Mr Prinn is already in hot water over allegations made by an 18-year-old student who said he harassed her at a rooftop bar in Bangkok on Monday.
Pol Maj Gen Trairong yesterday said law enforcement agents have gathered all the evidence in the student's case, and officers will ask the Bangkok South Criminal Court to issue a warrant for Mr Prinn's arrest tomorrow.
Officers will also work closely with immigration police to ensure the suspect does not flee the country, Pol Maj Gen Trairong said.
In response to this complaint, Mr Prinn quit the party on Thursday to fight the case and clear his name. He recently held a press briefing and denied the sexual misconduct allegations against him.
Later on, Sittra Biebangkerd, a lawyer for the student, said more than 10 people have been assaulted by the suspect. At least five of the victims were raped, he said, noting two of them were Thai students in London.