Delta Air Lines Inc., the third- biggest U.S. carrier, said no decision is imminent on the possible sale of its Comair regional unit while a board committee reviews merger alternatives.

A tie-up with a rival and a Comair sale are among the most significant choices facing Chief Executive Officer Richard Anderson, who took over on Sept. 1. Delta had left Comair's fate to be resolved after leaving bankruptcy last year.

"We continue to evaluate options to sell Comair, but no decision has been made," spokeswoman Betsy Talton said in an interview Sunday.

Delta announced the creation of the board panel on Nov. 14, a day after hedge fund Pardus Capital Management LP wrote to the company to urge a merger with UAL Corp.'s United Airlines. Pardus, which owns shares in both carriers, said combining would save money to counter surging jet-fuel prices.

The Financial Times reported Sunday on its Web site that Delta was delaying a decision on Comair while it explored hooking up with United or another competitor.