Sungai Besar Umno chief Jamal Md Yunos, who leads the red-shirts movement, was finally arrested in the wee hours of Saturday.
A source close to Jamal told Malaysiakini he was detained by cops at around 1.30am.
According to Berita Harian, he was found at a hotel room in Kuala Lumpur and was brought to the Selangor police headquarters.
Jamal had gone off the radar as police arrested several key figures of the Bersih 5 rally and red-shirts counter rally in the last 24 hours.
Around the same time, activist Adam Adli Abd Halim was briefly detained by police at KL Sentral but was subsequently released.