By Paul-Marin Ngoupana
BANGUI (Reuters) - An alliance of rebel groups behind a spate of recent attacks in Central African Republic has threatened to overthrow President Francois Bozize if he fails to fully implement a five-year-old peace deal.
The resurgence of attacks risks plunging the minerals-rich but unstable nation, where a number of rebel groups have fought low-level insurgencies since 2005, into another spiral of violence.
The rebel alliance - made up of breakaway factions from the CPJP, UFDR and CPSK rebel groups in the north of the country which signed a peace treaty with the government in 2007 - said the government must fully implement the terms of that deal.
In a statement issued on Monday, the alliance demanded, among other things, that the government pay rebel soldiers money promised to them to lay down their weapons and free political prisoners.
"Otherwise ... (the alliance) will take it upon itself to do everything possible to change, sooner or later, this regime which has done nothing to bring justice and peace to the Central African Republic. Enough is enough," it said.
Early on Tuesday, the rebels raided Bria, a mining town with a population of about 40,000 which lies some 600 km (360 miles) from the capital Bangui.
"Fighting started about 5 a.m. today. We were woken by heavy gunfire. Most of the population started fleeing. The military base seems to be in the hands of the rebels," Bria's Mayor Moussa Gouman told Reuters by telephone as gunfire could be heard in the background.
Authorities in the capital declined to comment.
On Sunday, the rebels attacked government soldiers sent to retake the town of Ndele in the north of the country which was seized on December 10.
"Our troops were ambushed by the rebels on (Sunday) night. Forty of them are unaccounted for as we speak," a CAR army captain told Reuters, requesting not to be named.
"Two of our vehicles loaded with weapons, ammunition and fuel supplies for our men were also seized by the rebels," he said.
Instability in landlocked CAR, roughly the size of France, its former colonial power, has discouraged major investment in its timber, gold, uranium and diamond deposits.
A 2006 advance by the nearly 3,000-strong UFDR on Bangui was only halted with the intervention of French armed forces before the peace deal was signed in April 2007.
The CPJP embarked on a separate rebellion with about 1,000 soldiers before agreeing a ceasefire, but most of the rebel groups remained armed.
A mix of local rebels, bandits, ethnic tensions and the spillover of conflicts from neighboring Chad, Sudan and Democratic Republic of Congo have undermined efforts to stabilize the nation which has suffered misrule since independence in 1960.
President Bozize took power in a 2003 coup and won a new mandate in January 2011 elections, which were dismissed by opponents as fraudulent.
(Additional reporting and writing by Bate Felix; Editing by Robin Pomeroy)