Shah Alam OCPD Asst Comm Shafien Mamat said police and the Shah Alam Municipal Council would be taking tougher measures on unruly fans during the Malaysia Cup match on Saturday.
He said certain items, that have become a staple among fans during football matches, will no longer be allowed into the stadium.
"I give an example, the drumsticks they use to beat the drums in the stadium, these can actually be used as weapons. So they will have to leave them outside before going in," he said.
Food vendors will also be screened now. Police will open a special entrance for vendors to have their products checked before they are allowed into the stadium.
"We are going to see football, let that be all. Let's not do anything else dangerous. Let us just watch football peacefully. Let what happened last week be a lesson," he said adding that the police had issued a letter to the Football Association of Malaysia (FAM) and the Football Association of Selangor (FAS) on their plans for this Saturday.
On Tuesday's incident, ACP Shafien conceded that there were weaknesses in the screening process of fans going into the stadium.
For instance, he said he noticed that Rela officers at the main gate leading into the VIP section of Shah Alam Stadium were not doing enough to screen and stop fans from going through.
"I was there and the weakness I saw was the Rela officers were just sitting at the gate that was unlocked. So when the people came and pushed open the gate, another 30 or 50 people managed to go in.
"We believe these people also brought in illegal items. But this Saturday we will be monitoring these gates," he said.
Selangor police chief Senior Deputy Comm Datuk Abdul Samah Mat said police had set up a taskforce to probe the supplier of the flares and rockets used in Tuesday's game.
A group of fans known as Ultras Malaya allegedly threw flares and fireworks onto the pitch during the 87th minute forcing the referee to stop the game on Tuesday night.
Saudi Arabia were leading 2-1, with Malaysia's lone goal scored by Mohd Safiq Rahim in the 70th minute, when the match was abandoned 30 minutes later.
The Ultras were apparently protesting against FAM after the 10-0 mauling by the United Arab Emirates last Thursday.