Police in Pakistan say they are holding two men, including a former lawmaker, for the beheading of a Polish geologist kidnapped near the Afghan border last year.
Police investigator Malik Tariq Awan says the two are linked to the Taliban and were arrested a month ago.
He named one as Shah Abdul Aziz, a member of a pro-Taliban religious party elected to parliament's lower house in 2002.
He said on Sunday that Aziz is believed responsible for plotting the abduction of Piotr Stanczak, who was kidnapped in September while surveying oil and gas fields. A video showing his beheading surfaced in February.
Awan said Sunday the other man is a suspected militant who he said admitted to being involved in the beheading.