Pol Gen Pracha made the statement yesterday after chairing a meeting of the ministry's civil servant committee.
The meeting agreed to set up a selection committee to choose a new PACC chief to succeed Pol Col Dussadee Arayawuthi, who has been transferred to the post of deputy justice permanent secretary in charge of drug suppression.
Pol Gen Pracha said Pol Col Dussadee will remain as the PACC chief until his transfer takes effect on Oct 1.
He rejected a report Pol Col Prawet, who is openly supportive of the red shirt movement, had been appointed acting PACC chief even though Pol Col Dussadee is supposed to remain in office until Sept 30.
A memo appointing him is said to have the names of Pol Gen Pracha and Pol Col Dussadee printed at the bottom with dotted lines waiting to be signed by them.
Pol Gen Pracha said the new PACC chief will be appointed by the selection committee chaired by the Justice Ministry's permanent secretary.
He said the timeframe for the selection of the new PACC would not be rushed and would follow proper procedures.
He said the ministry's level-nine senior officials could apply to compete for the post of the PACC chief.
Pol Gen Pracha also denied suggestions of political interference in Pol Col Dussadee's transfer.
Pol Col Dussadee has led investigations into several high-profile corruption cases involving politicians and influential members of society.
The transfer relieves him from command of several graft-busting investigations involving public land encroachment and evasion of taxes on imported luxury cars.
Pol Col Dussadee also unveiled corruption in state flood prevention projects in the Northeast.
He responded yesterday to reports and comments that he had been persecuted by Pol Gen Pracha, denying he is being politically persecuted or pressured.
Pol Col Dussadee said he was happy with his promotion, as the new post is higher than the one he currently holds.
He said drug suppression is work he is familiar with. Pol Col Dussadee said that if outsiders are nominated to become PACC chief, they should have adequate qualifications, knowledge, integrity and honesty.
Meanwhile, Mongkonkit Suksintharanont, secretary-general of the National Anti-Corruption Network, yesterday handed a petition to the PACC board, asking the board to take action against Pol Gen Pracha, whom they accuse of interfering with the agency's graft probes.