"This notice... requires Nawaz to appear before the PCB Security and Vigilance Department for an interview in relation to possible breaches of the PCB Anti-Corruption Code," the board said in a statement.
The PCB is probing allegations of corruptions in the second season of the Pakistan Super League and has initiated proceedings against suspended players Sharjeel Khan, Khalid Latif, Nasir Jamshed and Shahzaib Hassan.
In March, Mohammad Irfan was suspended for a year after the fast bowler failed to disclose two approaches made by bookmakers.
Nawaz was part of Pakistan's Twenty20 team on their ongoing tour of the West Indies.
Image: Mohammad Nawaz
Photograph: Reuters