(CNN) - Vice President Joe Biden expressed doubts Sunday about the validity of Iran's presidential election, but said it will take more time to analyze the results.
"I have doubts, but withhold comment," Biden said on NBC's "Meet the Press" program.
The Iranian government announced that President Mahmoud Ahmadinejad won Friday's election with 62.63 percent of the vote. The result sparked protests by supporters of his main rival, Mir Hossein Moussavi, who claim the vote was rigged.
Biden said the Iranian government has suppressed crowds and limited free speech by shutting down social networking sites such as Facebook, which he said raised questions. He also called the strong showing by Ahmadinejad "unlikely," based on pre-election analysis.
"Is this the response, is this the accurate response, is this the wish of the Iranian people?" Biden said.