CARACAS, Venezuela (AP) — President Hugo Chavez's continued silence in the week since his return to Venezuela has only deepened the mystery about his health. While tweets and letters have been issued in Chavez's name, and officials insist they have had long meetings with him, no photos have emerged and even an ally as close as Bolivian President Evo Morales was turned away without a bedside meeting. Some Venezuelans have questioned whether the socialist president is at a military hospital in Caracas at all, whether he even returned from Cuba or whether he is in fact still alive. Many Venezuelans say they no longer know what to believe.