Al Qaeda warns US, Jews of more attacks after bin Laden killing (VIDEO)

Al Qaeda in Yemen has warned the United States of more and bloodier attacks in retaliation for the killing of Osama bin Laden in Pakistan.

The warning by Nasser al-Wahishi, the head of Al-Qaeda in the Arabian Peninsula and once a close associate of bin Laden, was posted on Islamist extremist websites on Wednesday.

According to the SITE monitoring group, which monitors militant messages, Wahishi tells Americans not to fool themselves that "the matter will be over" with bin Laden's death.

He says that "what is coming is greater and worse, and what is awaiting you is more intense and harmful," Agence France-Presse reports. The "ember of jihad is brighter" following bin Laden's death, he reportedly says.

"We promise Allah that we will remain firm in the covenant and that we will continue the march, and that the death of the sheikh will only increase our persistence to fight the Jews and the Americans in order to take revenge," Wahishi said.

The warning came as Sen. John Kerry — the chairman of the U.S. Senate Foreign Relations Committee — announced he would travel to Pakistan next week to try and put relations with that country "back on track" after bin Laden's death.

U.S. special forces killed the bin Laden during a May 2 raid on a compound in Pakistan's garrison city of Abbottabad.

The discovery of bin Laden's hideout in Pakistan and his subsequent killing in the raid has further strained relations between the U.S. and Pakistan.

Pakistani Prime Minister Yousuf Raza Gilani has rejected claims that Pakistan's military and spy agency, ISI, were complicit with bin Laden or incompetent in failing to detect his hideout.