Officials in Afghanistan say two foreigners have been found dead in the capital, Kabul.
The bodies were found in Kabul's public park
There are conflicting reports as to how they died, with some officials saying they were stoned to death.
But a security source in Kabul says one man was strangled, while the other was bludgeoned, the BBC's Andrew North in the Afghan capital reports.
One of the dead men is believed to be a Swiss citizen while the nationality of the other is unknown.
The deaths are bound to cause concern to the international community in Afghanistan, our correspondent says.
Last week, two Britons and their Afghan interpreter were killed in an attack in the east of the country.
The workers were helping the United Nations prepare for landmark national elections due in September.
The bodies were discovered not far from the city centre.
Both men were wearing Afghan clothes; an Afghan spokesman said they both appeared to be Westerners.
One was reported to have been carrying a Swiss passport.
It is not known who attacked them, or why, and an investigation has been launched.
Kabul's deputy chief of police, Khalil Aminzada, is reported as saying the two men had recently entered Afghanistan from neighbouring Pakistan.