Close to 300 people have died in separate disasters in South Korea and India, while a terror attack left more than 100 dead in Somalia.
President Cyril Ramaphosa has sent messages of condolences to all three countries.
Ramaphosa said the thoughts of the people of South Africa are with the Indian, Somali and South Korean families that have lost their loved ones. President Ramaphosa wished all the injured speedy recoveries.
Halloween stampede
South Korean President Yoon Suk-yeol declared a period of national mourning following a deadly Halloween stampede in the country’s capital, Seoul, as distraught relatives flocked to the city’s hospitals searching for their missing family members.
“This is truly tragic,” Yoon said in a statement on Sunday, hours after some 151 people were killed in a crowd crush in Seoul’s Itaewon district.
The cause of the crush was not immediately clear, though some local media said it happened after a large group of people rushed to a bar in the area after hearing an unidentified celebrity visited there.
A full investigation has begun.
Somalia bombings
In Somalia, twin car bombings rocked Somalia’s education ministry in the capital Mogadishu on Saturday causing the death of at least 100 people.
The president blamed the al-Shabab militant group for the attack.
The pro-jihadist Somali Memo website has reported that the group has said it was behind the blasts.
A vehicle loaded with explosives was driven into the ministry compound and was followed by gunfire.
India bridge collapse
In India, at least 141 people died when a pedestrian suspension bridge collapsed in the western state of Gujarat.
A local official said most of those who had died were women, children or elderly. The bridge in Morbi had been reopened just a week ago after repairs.
There was overcrowding on the bridge at the time as people celebrated the Diwali festival, officials said.