Top politicians in the prime minister's office interfered too much in the early stages of the nuclear crisis, only deepening the chaos at the Fukushima No. 1 power plant, Tokyo Electric Power Co. claims in its final report on the disaster.

The allegation is included in the final report released Wednesday by Tepco's in-house panel investigating the catastrophe.

Starting in the early hours of March 12, 2011, leading officials in the prime minister's office began making specific requests of Tepco, and they were out of touch with what was going on at the plant, the report states.