The FBI says it would be premature to comment on a motivation at this time and joint investigators have neither ruled out terrorism, nor ruled it in.
The FBI has identified the dead gunman who killed 12 people at a Washington navy yard and eliminated the possibility of a second suspect.
A gunman has killed at least four people in a shooting rampage in the US state of California before police shot him dead in a college library.
Karl Durkheimer's gun shop enjoyed record sales of semi-automatic firearms -- "modern sporting rifles", as he calls them -- and handguns last weekend.
"We've endured too many of these tragedies in the past few years," Obama said during a somber televised appearance in the White House briefing room.
For as long as South Africans believe they can get away with murder, they will continue to kill. What do we say now that black people are in charge?
Daniel Bethencourt recounts the time he nearly got the opportunity to interview flamboyant business tycoon Zunaid Moti.
An arrest warrant has been issued for flamboyant Johannesburg property tycoon Zunaid Moti in connection with a high-speed chase near Lanseria Airport.
Baffled police were trying on Thursday to work out why a quiet taxi driver gunned down 12 people around England's serene Lake District.
Armed men have shot dead a Sudanese aid worker in Darfur in the latest of a string of attacks on international organisations in Sudan's violent west.
North West Premier Edna Molewa and her husband were shot at while returning from a funeral in Rustenburg, according to a media report on Tuesday.
Shooting broke out inside Madagascan President Marc Ravalomanana's office in Antananarivo moments after the army entered the compound on Monday.
Eleven people, including the suspected gunman and his mother, were killed in a shooting spree and car chase in southern Alabama on Tuesday.
The chairperson of the ANCYL in KwaZulu-Natal's Umgababa area, outside Durban, died on Friday morning after being shot, police said.
Condolences continued to pour in on Friday for KZN inkosi Mbongeleni Zondi, who was shot dead in Durban's Umlazi township on Thursday.
A total of 1 722 people were assaulted and 111 people sustained gunshot wounds in KZN over the first 18 days of December.
Johan Nel's legal team will be at Mmabatho High Court on Friday to hear whether he is granted leave to appeal his sentence, police said on Wednesday.
There has been an outpouring of soul-searching in the media this week following the accidental shooting of four-year-old Richard Belang.
Johannesburg High Court Judge Ratha Mokgoatlheng lashed out at the country's legal system on Thursday, saying it has lost its integrity.
The Johannesburg High Court was expected to hand down judgement against ten of the 13 Jeppestown massacre accused on Tuesday.