Hello house,
Yes people were called for visa processing and they are still in Abuja. Dont be scared for they are calling in batches. Everyone will be attended to before the induction. There is no cause for alarm, As I said earlier, it is just for visa processing and collection of award letters, it is not for induction.
For your own information, you weill be responsible for your accomodation, feeding, transport, etc. so prepare for they might call the second batch next week.