View and unblock users that are blocked by MFA using Powershell

AloisPommerais 

Not sure how far you got on this, but this is what i have done in the sense of get the blocked accounts, based on the feedback from Compulinx above.

Import-Module Microsoft.Graph.Reports
Connect-Graph -Scopes "AuditLog.Read.All" -TenantId "{TENANT_ID}"
$Filter = "activityDisplayName eq 'Fraud reported - user is blocked for MFA'"
Get-MgAuditLogDirectoryAudit -Filter $Filter | Select -ExpandProperty TargetResources

So now i can see that something/Someone have reported fraud, next step is how to unblock.
Hope that help others on the way, please revert if you have a way of showing who it is and how to unblock.