Senator Thani Onlaied and two brothers of the caretaker prime minister will be called for questioning in alleged connection with helping Kornsasi Buayaem and her maid get state jobs.

The case was not only about the physical abuse but also related to recruiting by the Royal Thai Police and the military. A House committee will invite about 20 people for questioning including the former maid who says Pol Cpl Kornsasi abused her.

The committee will also invite for questioning Mr Thani, Adm Sitthawat Wongsuwon who is also a senator and Pol Gen Patcharawat Wongsuwon.

The committee also will look into the recruitment process of Pol Cpl Kornsasi and the former maid.

In 2017, Ms Kornsasi was recruited by the General Staff Division of the Special Branch Bureau of the Royal Thai Police when she was 39 years old even though the maximum age for the position was limited to 35.

She also had a squad leader's position and was later transferred to Special Branch Bureau's 1st Division. Around the beginning of this year, she was assigned to perform temporary duty at the Internal Security Operations Command (Isoc)'s Region 4 Forward Command of the Royal Thai Army.

There was no record of her actually performing any duties there.

Recently, the name of a mysterious senator came to light when his name was seen with Pol Cpl Kornsasi's name on a list of temple donors in Ratchaburi's Muang district. The board gave their names and mentioned a 120,000 baht donation for building a temple hall.

Mr Thani was also related to the high-profile hit-and-run case of Red Bull heir Vorayuth "Boss" Yoovidhya in 2012.

Pol Cpl Kornsasi has been suspended from duty.