The AFL's investigation into the wild all-in brawl during Saturday's Hawthorn-Essendon match will stretch into a third day, with the expected raft of charges against those involved set to be laid on Tuesday.

Monday proved too short for AFL investigations officer Rick Lewis to complete his probe into the bloody punch-up at the MCG involving almost every player.

Despite seven players being interviewed, new television footage emerging and videotape of the brawl already the worse for wear being watched repeatedly, no further charges were added to the five already laid.

Instead, more charges are expected on Tuesday, setting the scene for Wednesday to be "fight night" at the AFL Tribunal.

In more fallout from the brawl on Monday:

* Allegations emerged from Essendon that Bombers player Mark Johnson was choked by a Hawthorn rival during the brawl;

* Johnson's second quarter tackle on Hawk Robert Campbell which was allegedly the catalyst for the third quarter fireworks was declared legal by AFL video reports officer Ian Robinson;

* Seven players were summoned to AFL House and grilled by Lewis - Hawthorn's Chance Bateman, Richie Vandenberg, Simon Beaumont and Lance Picioane and Essendon's Johnson, Andrew Welsh and Adam McPhee and;

* The five charges already laid from the brawl were scheduled to be heard on Wednesday night.

The timing of the hearing won't help Hawthorn, coming just two days before the Hawks play Carlton at Telstra Dome.

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