The MACC has set up a 24-hour operations centre to monitor the Semenyih by-election.
It said in a statement today that the centre is meant to enable the public to report cases of corruption or abuse of power during the by-election, which begins tomorrow.
The centre is located at Menara MPKJ, Jalan Chempaka Putih.
Besides the operations room, the public can also report abuses during the by-election by emailing [email protected] or calling the MACC.
Electoral reform group Bersih previously recorded 23 offences in last month's Cameron Highlands by-election, the highest among all by-elections since the 14th general election.
Among the 23 offences, 14 were committed by victors BN and five by Pakatan Harapan.
BN was flagged for abuse of power, among others, while Harapan was flagged for vote-buying and exercising undue influence on two counts.
Nomination day for the Semenyih by-election will be held tomorrow, while polling day is scheduled for March 2.