Athletic Bilbao forward Inaki Williams. AP
The Athletic Bilbao forward made the announcement through a video posted on his social media accounts.
``It's about time,'' said a Twitter post by Ghana's national team. ``Welcome to the Black Stars.''
The 28-year-old Williams was born in Spain from parents who reached a refugee camp in Ghana after fleeing civil war in Liberia and then moved to the Basque Country region.
``I feel the moment has come for me to find my origins within myself and with Africa and Ghana, which mean so much to me and my family,`` Williams said on Twitter. ``I want to return a small part of everything it has given to us, because Ghana has played a significant part of becoming who I am as a person, as a son and as a brother.''
Williams was a member of Spain's youth squads and made one appearance with the main team in a friendly against Bosnia in 2016. He had not been called up recently by current Spain coach Luis Enrique.
Ghana is in Group H of this year's World Cup in Qatar, along with Portugal, South Korea and Uruguay.
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