Police in Tokyo have served a fresh arrest warrant for YouTuber and former Japanese lawmaker GaaSyy, on suspicion of intimidating witnesses on video-sharing sites.

GaaSyy, whose real name is Higashitani Yoshikazu, was arrested on Saturday.

He was indicted on Friday on different charges --repeatedly threatening an entertainer, a businessperson and a designer in videos last year.

Authorities launched an investigation after those three people filed criminal complaints.

Police suspect GaaSyy in February made comments on social media regarding two of them -- the entertainer and the designer -- in an attempt to have them withdraw their complaints.

GaaSyy said he would not forgive them for filing complaints. He also said they would have to fight in court in front of cameras.

The entertainer and the designer reportedly told police that they were struck with anxiety and fear.

Police have not disclosed whether he has admitted to the charges.

Police plan to investigate whether GaaSyy, who was an Upper House member at the time, tried to obstruct judicial proceedings and cause anxiety for other people mentioned in his videos who were considering filing criminal complaints.

GaaSyy was expelled from Japan's Diet in March after staying overseas and failing to attend any Diet sessions.