(CNN) -- A second message presumably from al Qaeda leader Osama bin Laden urged Muslims to help the people of flood-stricken Pakistan.
The new message, which appeared Saturday on Islamist websites, comes after a similar message surfaced Friday. CNN could not verify the authenticity of the message.
The Pakistani devastation depicted by media reports "does not accurately reflect the crisis."
"There should have been a bigger scale movement [to help victims in] this crisis from the start, especially from able nations like Turkey, the Gulf states and Malaysia," the speaker said.
He also blamed international Muslim leaders for not visiting affected areas.
Produced by as-Sahab, the media arm of Al Qaeda, the remarks are entitled "Second Message - Help your Brothers in Pakistan" and was posted Saturday on Islamist websites known to carry messages by al Qaeda, its supporters and sympathizers.
The 13 minute, 9 second- long message includes an audio played over a picture of bin Laden on the right side of the screen and various stills of flood victims on the left side of the screen.
It is the second message purported to be by bin Laden within 24 hours.
The other presumed bin Laden message surfaced on Friday and urged Muslims to tackle famine, flood relief, the effects of climate change and clean water.
It called for Muslims to help Muslims by investing in infrastructure projects and developing awareness programs, such as how to deal with issues like water pollution.
There are no calls for terrorism in the messages.
But U.S. officials on Friday said that the al Qaeda leader has been urging affiliates to take action.
One U.S. official said that bin Laden has been in communication with al Qaeda affiliates within Pakistan and beyond, encouraging them to take more militant actions.
A second source from within the law enforcement community said the al Qaeda leader is believed to have recently expressed desire for some kind of attack to take place. But neither source said there is a specific time, target or mode of attack that is known by Western intelligence officials.
At the same time, the law enforcement source noted this is the first time bin Laden's name has come up in connection with a purported plot in quite a while and, if the intelligence is credible, it would appear to indicate he is "still in the game, for lack of a better term."
There are multiple plots at different stages of development, according to the U.S .official and while a Mumbai-style attack is possible, it is not the only concern, the U.S. official said.
Intelligence officials believe the plotting is beyond aspirational but not to the level of something definitive.
One U.S. source cautioned against linking him to recent reports that he had ordered Mumbai-style attacks on Britain, France and Germany -- saying his name might have come up in connection with a different thread of intelligence.
CNN's Amir Ahmed contributed to this report