"In light of this and other recent incidents, we have
initiated an immediate review of our already significantly reduced support to the Saudi-led coalition and are prepared to adjust our support so as to better align with US principles, values and interests, including achieving an immediate and durable end to Yemen's tragic conflict," he said.
It later said it will "immediately investigate" reports that its warplanes were responsible for the airstrikes, according to the official Saudi Press Agency.
"The coalition confirms that its troops have clear instructions not to target populated areas and to avoid civilians," SPA added. 'Too heavy a price'
Witnesses of Saturday's airstrike in Sanaa reported multiple civilian casualties at the wake, where hundreds of people had gathered to mourn the death of rebel-appointed Interior Minister Jalal al Rowaishan's father.
In addition to the reported deaths, hundreds of attendees were also wounded in the strike, local health officials said.
At least 20 people lost limbs, according to medical staff at the German Hospital in Sanaa.
Robert Mardini, regional director for the International Committee of the Red Cross, condemned what he called an "outrageous loss of civilian life."
"Civilians in Yemen have already paid far too heavy a price these past 18 months," he said in a statement.
Since peace talks in Kuwait failed in August, the coalition has intensified airstrikes, despite vocal criticism from rights groups that the bombardments have been indiscriminate and could constitute war crimes. The attacks have often hit civilian targets with devastating results.