Arrangements have been made for other members of the affected GRCs to step up.
Mr Perera was Ms Seah's mentor in the WP, the source said.
The ex-Speaker was previously very active on social media.
Police investigations are ongoing.
PM Lee found out that they'd continued their relationship even after counselling.
While cooking, she noticed that the mushrooms had a ring on their stems and powdery substances falling off them.
Get ready for an evening full of laughter.
The 47-year-old has been an MP since 2015 and retained her seat in Tampines GRC during GE2020.
Jessica Tan will now be the acting Speaker of Parliament.
People are welcome to visit his house and take photos.