Spain's Football Federation has confirmed that Liverpool striker Fernando Torres has ruptured a muscle in his left thigh.
The 26-year-old striker was a substitute in Sunday's World Cup final against Holland, but pulled up as the end of extra-time approached.
Torres returned to Spain following the triumph, along with the rest of Vicente Del Bosque's successful squad, and has now undergone a scan on the injury to ascertain the full extent of the blow.
A statement on the SFF's website confirmed Torres had a magnetic resonance scan at the Cemtro de Madrid Clinic and evidence was found of "a Grade 1 muscle fibre rupture in the left thigh."
Torres struggled to make the World Cup after missing the end of Liverpool's season with right knee injuries and looked out of sorts in South Africa.
The former Atletico Madrid striker earned four starts in the tournament after coming on in their opening group game defeat to Switzerland before being dropped for the semi-final against Germany.
Cadena Ser news network confirmed on Wednesday the scan results would be sent to Liverpool and it was unlikely Torres would play before the new Premier League season starts next month.