The explosions, believed to have been caused by an improvised Explosive Device (IED), occurred around the busy Jos Main Market, between railway terminus and the temporary site of the Jos University Teaching Hospital.
The first blast went off at about 3:10pm on Tuesday while the second erupted about 10 metres away 15 minutes later.
Pandemonium is also reported to have ensued with cars colliding as their drivers scampered for safety.
The casualty figure is yet to be confirmed, but scores of people are reported to have died.
The Plateau State Government said over 241 illegal immigrants were arrested this week in the State following a house to house search carried out by the Nigeria Immigration Service (NIS) and the Special Task Force (STF) in the State.
The State Commissioner for Information and Communication, Yiljap Abraham disclosed this on Saturday, while briefing Journalists at the Jos press centre.
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