Warsaw - The Polish Senate speaker on Tuesday called off a visit from the head of the Pakistani Senate amid the recent killing of a kidnapped Polish engineer by the Taliban in Pakistan.

Senate speaker Bogdan Borusewicz said the cancellation wasn't a move directed "against Pakistan," but that the talks would not be possible "in such an atmosphere."

"I didn't see the possibility of cooperation after our countryman was murdered," Borusewicz told reporters.

Warsaw (Poland), Feb. 10 : Perturbed by a video released by the Taliban showing militants beheading a Polish geologist, the Polish Government has vowed to bring the perpetrators of the `inhuman crime' to book.

Warsaw has promised to issue international arrest warrants for Taliban militants who executed Piotr Stanczak in Pakistan, four months after his abduction.

"A crime was committed, so there has to be an investigation, a search for the culprits, and if possible putting them before the justice system and an exemplary punishment," Foreign Minister Radek Sikorski said.

Top Polish officials have also charged elements within the Pakistani Government for the killing, the Dawn said.

Warsaw - Polish President Lech Kaczynski and visiting Palestinian Authority President Mahmud Abbas condemned on Monday the Pakistani Taliban's recent killing of a kidnapped Polish geologist.

"We don't accept terrorism. We didn't accept it and we won't," Kaczynski told reporters in Warsaw, adding that the killing was proof that no country is free from the threat of terrorism.

Pakistani militants released on Sunday what appeared to be video footage of the Polish engineer's beheading. They had offered to exchange him for 61 of their colleagues held by Pakistan.

Munich  - A Polish engineer kidnapped by Taliban militants in Pakistan has been killed, Poland's foreign minister said at a security conference in Munich on Sunday, citing "reliable but unconfirmed" reports.

The group in north west Pakistan holding Peter Stanczak for the past 18 weeks had claimed via a spokesman late Saturday to have executed their hostage, but there had been no official confirmation.

Speaking to the Polish news agency PAP at the conference in Germany on Sunday, Foreign Minister Radek Sikorski said: "The Polish geologist working for the development of Pakistan was killed only yesterday."

Sikorksi said Stanczak had been killed according to reliable but unconfirmed reports, PAP reported.

Islamabad  - Taliban militants in troubled north-western Pakistan said Saturday that a Polish electrician held by them for the last 18 weeks has been beheaded.

A Taliban spokesman who identified himself as Mohammad, told various media organizations over the phone that Polish citizen Peter Stanczak was executed in tribal district of South Waziristan after the expiry of a February 6 deadline given to Pakistani and Polish governments to fulfil the militants' demands.

Islamabad - Taliban militants in troubled north-western Pakistan claimed Saturday that a Polish electrician held by them for the last 18 weeks has been killed.

A Taliban spokesman who identified himself as Mohammad, told various media organizations over the phone that Peter Stanczak was executed after the expiry of a February 6 deadline given to Pakistani and Polish governments to fulfil the militants' demands.

Both government did not seem interested in the release of the captive, added Mohammad, who represents the Taliban in the country's tribal district of Darra Adam Khel.