Peshawar, Mar 14 : Suspected militants have killed a tribesman, who they believe was an American detective in a town between the North and South Waziristan tribal regions.

According to officials, the miscreants had dumped the tribesman's body on a road in Sham.

A security official told a foreign news agency that he was first they shot and then his throat was slit.

"They left a note claiming that he was a US spy and warning that anyone working for the US will suffer the same fate," said the official.