With the win, Gamba moved one step closer to qualifying for the next round as they improved their points total to nine for a clear three-point lead over second-place Shandon Luneng.

The hosts started well and came close in the eighth minute when Satoshi Yamaguchi header from a Yasuhito Endo corner was blocked by a defender before a Sota Nakazawa header was also cleared.

Sriwijaya, taking part in the ACL for the first time after winning the Indonesian league, had the 10,249 fans on their feet when forward Keith Jerome Gumbs dribbled up field on a counter and hit a shot from just inside the box but Gamba goalkeeper Naoki Matsuyo reacted well deny the 36-year-old.

Gamba finally broke the deadlock in the 40th minute when Leandro found space behind the Indonesians' backline and connected with a chipped ball from Hayato Sasaki to strike home with a fine volley from close range.

Four minutes later, the Asian champions added a second when Lucas got a pass from Cho Jae-jin on the left and broke down the byline before returning the ball to Leandro. The new signing from Vissel Kobe made no mistake to head home.

Gamba boss Akira Nishino made a double substitution at half-time, brining in forwards Ryuji Bando and Masato Yamazaki to maintain his attacking intent and go for more goals.

In the 49th minute, their efforts produced an own goal from the visitors to widen the lead to 3-0 when Sriwijaya defender Ambrizla's back pass went into the back of his own net.

Three minutes later, Satoshi Yamaguchi rose highest at the far post to meet an Endo free-kick with a header to hand his side their fourth goal of the game.

Gamba then rounded off the scoring in the 67th minute through substitute midfielder Mihchihiro Yasuda.