(Reuters) - President Barack Obama has signed a secret order authorizing covert U.S. government support for rebel forces seeking to oust Libyan leader Muammar Gaddafi, government officials told Reuters on Wednesday.

Obama signed the order, known as a presidential "finding", within the last two or three weeks, according to government sources familiar with the matter.

Such findings are a principal form of presidential directive used to authorize secret operations by the Central Intelligence Agency. This is a necessary legal step before such action can take place but does not mean that it will.

As is common practice for this and all administrations, I am not going to comment on intelligence matters," White House spokesman Jay Carney said in a statement. "I will reiterate what the president said yesterday -- no decision has been made about providing arms to the opposition or to any group in Libya."

The CIA declined comment.

Exclusive: Obama authorizes secret help for Libya rebels | Reuters