Liverpool striker Alexander Isak has undergone surgery after breaking his leg, the Premier League club said on Monday, Reuters reported. 

Isak suffered the injury in scoring Liverpool's opening goal in Saturday's 2-1 win over Tottenham Hotspur when his foot got caught between Micky van de Ven's legs as the defender dived to block his shot.

"Alexander Isak today successfully underwent surgery on the injury he sustained on Saturday," Liverpool said. "After diagnosis, an operation was completed today on an ankle injury that included a fibula fracture. No time frame (is) yet placed on his return."