At least 44 people were killed in clashes between Islamists and police in Egypt on Sunday, as thousands of the military's supporters marked the anniversary of the 1973 Arab-Israeli war.
US police shot a female motorist dead after she led them on a high-speed chase from near the White House through the streets of downtown Washington to the Capitol building.
Police in Rio de Janeiro used tear gas Tuesday to disperse around 100 protesting teachers who tried to disrupt the city council vote on a wage increase.
The New York Police Department on Tuesday offered a $12,000 reward to witnesses who could help them find the person who shot dead a 16-month old boy in Brooklyn.
Turkish police Sunday blocked the entrance to Istanbul's Gezi Park, the epicentre of anti-government protests in June, to prevent a demonstration against a possible military intervention in Syria.
Indian police have arrested the alleged co-founder of top home-grown militant group the Indian Mujahideen, which is suspected of killing hundreds in multiple attacks across the country.
Justin Bieber was stopped for running a stop sign and driving without a license Wednesday, in the Canadian teen sensation's latest run-in with traffic police.
A Toronto area mechanic who posted a Twitter message seeking marijuana to alleviate boredom at work this week got an unexpected reply -- from police with an apparent sense of humour.
Brazilian riot police fired tear gas, stun grenades and rubber bullets to disperse extremist protesters who ransacked bank branches, shops and a car dealership in central Sao Paulo.
Scottish police on Monday confirmed they were investigating claims of physical and sexual abuse at one of Scotland's best known Catholic boarding schools.