Congo banned public gatherings for two days starting Monday in Beni, after the eastern city was hit by two explosions.
A suicide bomber detonated his explosives at a busy intersection in Beni on Sunday, the same day another explosion rocked a Catholic church, authorities said. Neither bomb killed any civilians, but the government closed major gathering spaces for two days and imposed restrictions on public meetings as a precaution against further explosions.
The suicide bomber has been identified as a Ugandan who was a member of the Allied Democratic Forces, according to Congolese army spokesman Lt. Anthony Mwalushay.
The suicide bombing was the first such attack in Beni, worrying authorities who noted the longtime ADF rebel group has in the past few years pledged allegiance to the Islamic State.
"We arrested two suspects and intercepted their communications," Mwalushay said Monday. "I call on the population to be calm and to be very vigilant."
Schools, markets and churches are closed for 48 hours in Beni, he said.
"We do not want a crowd of more than 10 people for security reasons to avoid falling into the trap of the new modus operandi of the Ugandan ADF rebels in Beni," he said.
A bomb had also exploded early Sunday at a Catholic church in Beni's Butsili district. No one was killed, but two people were seriously injured.
"We were about to open the doors of the church to allow the faithful to participate in mass. We heard a bomb inside the church. Two people were already there for morning prayer," said Mathe Kombi Victoire who works at the church.
This is the third attack in 2021 on a religious target, according to military and government authorities who noted that two imams were killed by ADF rebels earlier in the year.
Many Beni residents stayed at home in fear on Monday.
"We would like the Congolese government to strengthen the military presence in certain places of the city of Beni so that these kinds of explosions do not appear again," said Mumbere Mafuta, a Beni resident. "It is serious because these kinds of explosions resemble that of a terrorist and here in Beni we have never seen such things. Today it is a bar, church and market. We don't know if tomorrow it will be a school. May God help us."
The ADF originated in neighboring Uganda and has been a threat in eastern Congo for more than 20 years. The Islamic State group has claimed responsibility for some attacks carried out by ADF rebels, but the exact relationship between the groups is not clear.
A Congolese military campaign was launched against the rebels last year, and fighters have since dispersed and fled into various parts of eastern Congo, where dozens of armed groups fight over control of the mineral-rich territory.
The rebels have responded to the military offensive with increased attacks, especially in Beni and the surrounding area.