Yemen TV said President Saleh arrived in the capital, Sanaa, by private plane at dawn. No other details were given.

He went to Saudi Arabia in June for treatment following a rocket attack on the grounds of the presidential palace.

President Saleh, who has been in power for more than 30 years, has faced months of protests urging him to quit.

Clashes in the capital between government troops and forces opposing the president have recently intensified.

More than 80 people, mostly unarmed protesters, have been killed since September 18.

Medics say at least one person was killed overnight and many others wounded when mortars landed in Change Square.