RIO DE JANEIRO, June 24 (Xinhua) -- Dutch international Leroy Fer suffered a hamstring injury on training in Rio de Janeiro on Tuesday.

According to the Dutch football association KNVB examination in the forthcoming days will reveal the extent of the injury. After feeling pain in his left thigh he limped off training at the Flamengo training accommodation.

Fer debuted at the World Cup on Monday against Chili (2-0) as a second half substitute. Two minutes after his entrance in the 75th minute he opened the scoring with a firm header.

Bruno Martins Indi returned to group training on Tuesday. He seems recovered from the concussion he suffered in the second match against Australia (3-2).

Dutch coach Louis van Gaal had prepared a light post-match training. On Monday June 29 the Dutch meet Mexico in Fortaleza in the last sixteen of the World Cup.