As the army patrolled the streets outside - deserted because of a dusk-to-dawn curfew - nurses from the Nigerian Red Cross were making do with scarce and improvised equipment to treat roughly two dozen people, some suffering from gunshot wounds.
During the street fights that tore through Jos on Friday and Saturday, it was corpses that were being brought to the mosque - now transformed into a makeshift health centre - nearly 400 of them, according to the imam Khaled Abubakar.
The clashes began with a dispute over whether a predominantly Muslim party or a mainly Christian party was believed to have won in a local government election held Thursday.
Street fighting escalated, leaving 200 people dead according to official estimates and twice that number according to humanitarian and religious sources.
'I've seen a lot of dead bodies on the streets. Some were burned, some were shot,' Mr Sani said.
Many of the corpses that were strewn on the streets on Saturday have since been picked up.
Houses, churches and mosques were also burned to the ground in some city districts, witnesses said. But with the curfew in place, it was difficult to verify the claims independently.
Heavily-armed soldiers in anti-riot gear patrolled pickups and trucks.
Others manned road blocks on the eerily quiet streets to search the few people trying to get through.
Authorities said around 1,500 were arrested for their alleged participation in the fighting, with 500 picked up Saturday alone.
Sandwiched between the predominantly Muslim north and the mainly Christian south, Jos is no stranger to religious violence. Clashes between Muslims and Christians in 2001 left hundreds dead.
But the latest events 'are on a different scale', according to Samaila Mohammed, a local member of parliament, who argues that more people were killed over a shorter period this time round.
As night fell, the few people out on the streets scuttled off home for fear of being caught outside, with a curfew and a shoot-to-kill order in place. -- AFP