NASHVILLE (AP) - Country legend Merle Haggard has canceled his shows in February due to health issues caused by pneumonia in both lungs.

A statement released by his publicist Wednesday said the singer-songwriter was still feeling weak from his recent struggle with the illness and has decided to seek further treatment.

The statement said Haggard "is hopeful he will be back on the road later in the spring." He had shows scheduled in California and Nevada in February.

The 78-year-old singer of hits like "Okie From Muskogee," "Mama Tried" and "Workin' Man Blues," had a battle with lung cancer in 2008. He still keeps up an ambitious touring schedule.