MEXICO CITY, May 12 (Reuters) - Mexican state oil

company Pemex said on Monday that it responded in a timely

manner to requests for information from Norway's wealth fund,

but the fund's ethics watchdog maintained its recommendation to

withdraw investments.

Norway's wealth fund, the world's largest, sold all its

fixed income investments in Pemex on Sunday citing what it

called an unacceptable risk that the company is involved in

corruption.