The authorities in Mexico say they've arrested the chief bodyguard of the country's most wanted drugs baron, the fugitive Sinaloa cartel boss Joaquin "El Chapo" Guzman. The bodyguard, Felipe Cabrera Sarabia, was detained by army special forces. Colonel Ricardo Trevilla of the Mexican army said Cabrera had risen through the ranks of the cartel.

"Cabrera used violence to keep control of the group's criminal activities. This allowed him to gain stature in the group. It allowed him to become a key player in drug smuggling and

trafficking

. It helped him become a security provider for the head of the cartel in his area of operations."

The head of the army in Guinea-Bissau, General Antonio Indjai, has said an attack on the general staff headquarters and other military bases in the capital has been foiled. He said the army and the government remained in control of the country following an attempt to seize weapons from military armouries.

Hundreds of people have attended a memorial service in Nigeria at the Roman Catholic church where more than 30 people were killed in a bomb attack on Sunday. The blast on the outskirts of the capital Abuja was the first in a series of attacks on Christmas Day.

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The Office of the United Nations Human Rights Commissioner has expressed alarm following the 10-year jail sentence imposed in China on a veteran activist, Chen Xi. Mr Chen, who posted essays online proposing political reform and improving human rights, is the third activist to be jailed in China in the last 10 days.