A Red Cross official said at least 29 people died and 60 others were wounded in multiple bomb blasts that were carried out at two bus stations in northern Gombe city in Nigeria on Wednesday evening.
No group has claimed responsibility for the bomb attacks.
The first bombing was carried out at around 7:00pm at a mosque at Dadin Kowa bus station by a suspected suicide bomber.
The people had gathered to pray, said witnesses.
According to witness Umaru Sani, a shopkeeper, second bomb exploded at Nasarawo junction near the same bus station.
Another witness, Ahmed Abu, a bus driver said: "I heard two loud explosions, one after the other; I saw people coming out of the mosque with blood gushing out ... I counted about seven dead bodies.”
After 20 minutes following the first attack, another two bombs went off at the Duku bus station and a small nearby market.
"I was going towards my house when I heard two loud explosions coming from Kasuwar Mata ... on arrival at the scene, I saw many dead bodies, I cannot count how many because it was getting dark," said witness Hussaini Adamu.
Police spokesman Fwaje Ajiri said he could not give a death toll yet but confirmed that there were blasts in both areas about an hour apart. He confirmed there was at least one blast in each location.
Last Thursday at least 50 people were killed in two bomb attacks on a market in the same city.
Boko Haram is suspected to carry out the attacks.
Boko Haram has been fighting a six-year insurgency in a bid to establish a state of its own in northern Nigeria and in the process has killed thousands of people and caused about 1.5 million to flee their homes.
The group pledged its allegiance to ISIS in March.