Jamiat Ulema-e-Islam-Fazl (JUI-F) chief Maulana Fazlur Rehman said on Tuesday that those involved in the Bajaur blast should be ashamed of their actions.

Speaking to media, Fazal lamented: "The attack on the JUIF workers' convention is condemnable. It is the darkest chapter in the country's history".

Fazl said: "The time of trial comes upon the nations. Despite the Bajaur blast, the morale of the JUI-F workers did not drop".

The PDM chief said, "Even the United Nations (UN) has condemned the Bajaur blast. Those involved in the blast have accepted the responsibility."