Armed men have violently stormed a village in Nigeria's Niger state, killing at least 30 people and looting shops, state authorities have said.

The attackers emerged from a forest near the village of Kasuwan-Daji on Saturday and set fire to the local market, looted shops and kidnapped an unspecified number of people, police said.

The gunmen entered the town on motorcycles carrying weapons, rounded up people and then proceeded to slaughter them, while others were shot dead, a local journalist told the BBC's Hausa service.

Attacks and kidnappings by armed criminal gangs, known as bandits, have been a problem in Nigeria for years, but reports in western and central regions have spiked recently.

Abdullahi Rofia, an official with the Niger State Emergency Management Agency, confirmed the journalist's report that villagers were rounded up and killed.

He told the BBC that people in the community were terrified: They are hiding, they are too afraid to talk to anybody.

They are scared that if you talk, they will turn and do the same to you.

Niger state police spokesperson, Wasiu Abiodun, said an emergency team has been deployed to help the injured and security forces are working to rescue those kidnapped.

Witnesses highlighted the absence of security forces in the village during the attack, calling for government intervention.

The attack happened just a day after authorities announced the phased reopening of schools following a previous mass kidnapping that had forced closures. In November, more than 250 individuals were abducted from a local school, in one of Nigeria's most alarming kidnapping incidents.