US troops in Kyrgyzstan should be stripped of their immunity from prosecution, Kyrgyz President Kurmanbek Bakiyev has said.
US troops at Manas base are protected from Kyrgyz law
A Kyrgyz man was fatally shot by an American soldier at a US airbase near the Kyrgyz capital Bishkek.
The US military said a lorry driver delivering fuel had been shot at an entry checkpoint to the US base.
The US leased the base after the 11 September attacks in 2001 to support operations in nearby Afghanistan.
US troops at the Manas base are currently shielded from criminal prosecution under an agreement between the two countries.
"It would be appropriate for US military based in Kyrgyzstan to bear responsibility for any illegal acts they carry out in accordance with Kyrgyzstan's laws," President Bakiyev told the American ambassador, Marie Yovanovitch, according to a statement from the president's office.
The ethnic-Russian driver of the fuel lorry, Alexander Ivanov, was shot at the checkpoint after brandishing a homemade knife, a US military spokesman said on Thursday.
The guard had "used deadly force in response to a threat", the military said.
Mr Ivanov worked for a company called Aerocraft Petrol Management which delivers fuel to Manas airport, Kyrgyzstan's main civilian airport and site of the US base.
President Bakiyev has demanded that the US soldier involved in the death remain in Kyrgyzstan until the investigation is completed.