A man who tackled a Pakistani cricket player during Sunday night's one day international against Australia at the WACA Ground in Perth has been charged with assault.

Police say the 37-year old man has also been charged with trespass.

He ran onto the playing field during the game and tackled Khalid Latif, who was not injured.

He has been granted bail to appear in Court on February the 16th.

Australian captain Ricky Ponting and Pakistan coach Intikhab Alam have voiced their concerns about venue security.

It was the second time a spectator invaded the field of play during the game, and Intikhab says officials need to take stricter security measures.

"I think you have to take very strict measures about it, people running on the field, for the safety of the players," he said.

"The way he tackled him...he could have been very seriously hurt."

Alam said it was a disappointing way to end a tour that has seen well-behaved crowds across the board.

"It was very, very unfortunate," he said.

"Throughout the tour, things have been very good - [Australian crowds] have looked after us well.

"But it has happened in the past so many times.

"The ground authority needs to make sure it doesn't happen, you have to be extra careful."

He told reporters the irony was not lost on him that security concerns stop his side from playing in Pakistan.

"Yes, but again you have to look at things positively," he said.

"This could be very very detrimental as well, [Latif] is not seriously hurt but he could have been.

"You have to be very careful today, wherever you go."

Ponting says he would have considered bringing his team from the field if one of his players had been tackled.

"If I was the fielding captain tonight, I would have definitely brought all the players in and had a chat to them about how they felt about it," he said.

"That wasn't the first spectator that had been out on the ground tonight either.

"That's what I would have done if I'd been the captain out there."

The home side won amid a flurry of controversy after the tourists' stand-in captain Shahid Afridi was caught on television cameras biting the ball.

Afridi pleaded guilty to the charge, despite earlier saying he was "smelling the ball," and was later slapped with a two-match ban by the ICC for ball tampering.

While Pakistan kept things close in the dead rubber fifth ODI, the way it lost was representative of its winless summer in Australia.

The home side needed one run from four balls in the final over and with Ryan Harris at the crease, Afridi's men still had a sniff of victory after Iftikhar Anjum dismissed Nathan Hauritz for 18 on the first ball.

When Harris lobbed the ball to Afridi at mid-off, Pakistan thought an unlikely victory was closer than ever, but umpire Asoka de Silva ruled the delivery a no ball, gifting Australia the last run it needed.