Pakistan one-day captain Shahid Afridi has been asked to explain his criticism of coach Waqar Younis.
Afridi claimed Waqar had meddled in team selection during the 3-2 series victory in West Indies.
"Waqar interferes with the team selection and everyone should do his job," Afridi said on his return home on May 8.
The Pakistan Cricket Board are investigating Afridi's outburst.
"PCB has taken notice of the statements made by Afridi in the media about the differences within the tour management in West Indies. It is a violation of code of conduct on part of Afridi," said a PCB statement.
"An explanation has been sought from him for the reasons to make such statements publicly. PCB will take appropriate action after submission of the tour report at the conclusion of the tour."
Former Test paceman Waqar remains in the Caribbean overseeing the Test squad, of which Afridi is not a part as he no longer plays five-day cricket.