Yes! indeed It's PA's fault. They are in best position of quell this confusion.But they choose to stir the speculation.
Because Pak Citizen can not be convinced with mere 750 or 1000km range of missile in response of Indian Long range Agni 5.
Shaheen1A is neither Long range nor IRBM(american classification), due to
1. It is a Single stage rocket so it can not have range of 3000Km. Compare it with Shaheen 2(Range 2500Km) which is double stage rocket.
2. Each forces has own Classification of IRBM,MRBM or SRBM. for eg. Russian...