A key trial in Uganda of 13 men accused of taking part in Al-Shebab bombings that killed 76 people in 2010 was postponed Tuesday after the top prosecutor was shot dead.

Police on Tuesday vowed to catch the killers of Joan Kagezi, acting assistant director of public prosecution, who was murdered by men on a motorbike as she drove home with three of her children on Monday evening.

Police in Uganda on Friday said they were hunting a terrorist suspect they believe is linked to Somalia's Shebab militants and was planning an "imminent" attack in the capital Kampala.

Police spokesperson Fred Enanga said the suspect, who remains at large, had plotted to attack places popular with foreigners.

Uganda said Thursday it was boosting security over threats by Somalia's Shebab militants, hours after the U.S. embassy in Kampala warned its citizens of a possible imminent terror attack.

In an emergency warning issued late Wednesday, the U.S. mission in Kampala said it had "received information of possible terrorist threats to locations where Westerners, including U.S. citizens, congregate in Kampala, and that an attack may take place soon."

The trial of 13 men accused of involvement in twin bomb attacks that killed 76 people in Uganda nearly five years ago finally got under way on Tuesday.

The July 2010 bombings targeted football fans watching the World Cup final between the Netherlands and Spain at a restaurant and a rugby club in the capital, Kampala. Somalia's Al-Qaida-affiliated Shebab militants claimed responsibility for the strikes, the region's worst attacks in more than a decade.

The International Criminal Court's chief prosecutor pleaded on Friday for the Ugandan Lord's Resistance Army rebel chief to surrender, vowing he would receive a fair trial just as his deputy faces.

Senior rebel leader Dominic Ongwen, a child-soldier-turned-warlord in Uganda's LRA, appeared before the ICC in The Hague for the first time in January, charged with war crimes and crimes against humanity.

The International Criminal Court's chief prosecutor traveled to Uganda on Thursday following the arrest of a top commander of the brutal Lord's Resistance Army rebels.

Rebel leader Dominic Ongwen, a child-soldier-turned-warlord in Uganda's LRA, appeared before the ICC in The Hague for the first time in January, charged with war crimes and crimes against humanity.

Suspected Ugandan rebels hacked to death at least 21 people this week in eastern Democratic Republic of Congo, the local governor said Friday, giving an official figure.

"The toll from the latest carnage in Mayangose is 21 dead. The FARDC (Congolese armed forces) were able to free 17 people" taken hostage, North Kivu province governor Julien Paluku said while visiting Beni town in the far north.

Ugandan soldiers backing embattled South Sudan's government have extended their operations in the war-torn country until a final peace deal is agreed, defense ministers said in a statement Wednesday.

Rival leaders in South Sudan signed a seventh ceasefire deal on Sunday, although fighting has continued.

Twenty-three people have been hacked to death in the eastern Democratic Republic of Congo, which has been plagued by a spate of massacres blamed on Ugandan rebels, the army said Wednesday.

The attack took place Tuesday night in the city of Beni in the restive North Kivu province, which borders Uganda.

A "detoother" or a "dentist" is a gold-digger looking for a wealthy partner, while "spewing out buffalos" means you can't speak proper English. And a "side-dish" isn't served by a waiter.

Those and other terms are articles in Uganda's strange, often funny locally-adapted English known as "Uglish," which is now published for the first time in dictionary form.