The Thai capital of Bangkok has been put on alert with reports that flood waters were advancing deeper into the city from the northern outskirts, even as the death toll from countrys worst floods in decades surged above 400 today as public anger stepped up against authorities. The sluice gate and a dyke failed to limit inflows to save the inner city. The water level on the key Rarm Intra Road, both inbound and outbound, continued to rise and the road became impassable yesterday. The flood has now killed 427 people, an increase of 42 from the figure reported a day earlier, authorities said. So far no deaths have been reported in Bangkok. The long stretch of Sukhumvit road whose either sides are dotted by high rise apartments where most of the expatriates including a sizeable Indian population live, has so far not been hit by the flood waters.