Former Pakistan captain Babar Azam and pacer Naseem Shah arrived in Lahore on Tuesday after performing Umrah.
According to details, Pakistan opener Imamul Haq and all-rounder Iftikhar Ahmed have also arrived in Lahore.
Azam, Shah and Ahmed will join the physical conditioning camp in Kakul tomorrow.
The Pakistan Cricket Board (PCB) had earlier announced the names of 29 players for the intensive physical fitness camp.
The aim of the camp is to improve fitness and performance ahead of the upcoming T20 World Cup to be held jointly in the United States and the West Indies.