MEXICO CITY (Reuters) - Mexican tycoon Carlos Slim's telecoms giant America Movil (>> America Movil SAB de CV) said on Friday it had been declared dominant in the telecoms sector by a new watchdog as widely expected, amid a government push to boost competition.

Earlier in the day the regulator also declared as dominant in telecoms Slim's bank Inbursa (>> Grupo Financiero Inbursa SAB de CV) and conglomerate Grupo Carso (>> Grupo Carso S.A. de C.V.), which both have direct or indirect stakes in America Movil. It cited their "economic interests".

Mexico is trying to spur competition in its tight-knit phone and TV industries through a wide-ranging telecoms overhaul passed last year.

(Reporting by Mexico Newsroom)