ESSENDON assistant coach Simon Goodwin is the latest Bombers official to become implicated in the supplements scandal.

The ABC's 7.30 program has published text message exchanges purporting to be between Goodwin and controversial sports scientist Stephen Dank.

In the texts, from July last year, Goodwin reportedly asks Dank to supply him with "the good stuff" and "good gear."

"Don't forget the good gear mate," Goodwin reportedly writes on a text sent to Dank on July 5, 2012.

One week later, Goodwin reportedly writes: "Sorry mate forgot to see you yesterday. Am heading to Adelaide today can you please bring some of the good stuff in buddy."

AFL Media has been unable to independently verify the text messages and subsequent allegations reported by the ABC.

Dank said Goodwin was referring to Hexarelin, a peptide that stimulates the release of human growth hormones, the ABC said.

Goodwin, 36, won two premierships as a player with Adelaide before joining Essendon's coaching panel at the end of 2010.

The report follows fresh allegations late last week against Essendon coach James Hird, who has staunchly protested his innocence in recent days.

Hird is expected to be interviewed by Australian Sports Anti-Doping Authority investigators in the next week.

It's likely Goodwin, other Essendon officials and players will also be interviewed in the coming weeks.

So far no Essendon players have been questioned by ASADA.

"I can't really comment about the specifics of it, but none of the players as yet have been interviewed for the ASADA investigation," skipper Jobe Watson told Channel 7 on Saturday night.

Dank can't be compelled to give evidence to ASADA because he's no longer involved in an official capacity at the club.

A second investigation into the governance, processes and procedures at the football club is being conducted by former Telstra boss Ziggy Switkowski.

It's expected the independent report will be handed to the Bombers' board in the coming weeks.

Watson dismissed suggestions Hird should step down pending the outcome of the dual inquiries.

"I certainly wouldn't expect him to do anything like that until the investigation has been completed," Watson said.

Matt Thompson is a reporter for AFL Media. Follow him on Twitter @MattThompsonAFL