Bersih 2.0 has labeled the food poisoning incident as an act of sabotage and an attempt to poison their participants.

Chairman Maria Chin Abdullah said the coalition condemns the insidious act where boxes of juices offered to participants during the Bersih 4 peaceful assembly last night under the guise of "support for Bersih" had been contaminated.

“These drinks have caused participants to have stomach pains, vomiting and diarrhea. This seems to be an act of sabotage and an attempt to poison our participants, who have since been given medical attention and taken to the hospital.

“We urge the police to investigate this as soon as possible and bring the culprits to justice. Police reports have been made.

“We also advice all participants to not accept any free drinks distributed by people unauthorised by the Bersih 4 organising committee.

“If they do, we advise them to check the top seam of the packet drinks for puncture holes, and if found, immediately report it to the security unit,” she said in a statement today.

Yesterday, 13 people were hit with food poisoning while attending Bersih 4.

The rally's medical team coordinator, Tan Gengta had reportedly said of the 13, two were 10-year-old girls.