It looks like AVZ Minerals is on the hook again over tweets

AVZ Minerals has apparently been collared again over its Twitter activity.

The Congo-focused lithium explorer (ASX:AVZ) has gone into a trading halt while it prepares a response to the ASX.

Stockhead understands the query is related to recent activity on Twitter — an issue that AVZ was previously grilled about by the bourse in late March.

AVZ shares were up 2.3 per cent at 22.5c on Thursday before the stock went into a trading halt.

The shares have increased seven-fold from this time last year — and traded as high as 37c in January.

AVZ previously had to explain why pictures of drill core from its Manono lithium project in the Democratic Republic of the Congo appeared on Twitter before results of recent drilling had been announced to the market.

The company is now undertaking a 20,000m drilling program at the project.

AVZ originally told the ASX the pictures were of previously released drill results.

AVZ Minerals shares (ASX:AVZ) over the past year.

But in a follow-up ASX announcement, the company conceded some of the cores shown on Twitter posts were from drill holes that had not yet been reported to the market.

The tweets were posted on March 28 by Michael Langford, who is an executive director of Singapore-based consultant Airguide — which is engaged as an advisor to AVZ.