New details have emerged about the actions taken by hacked infidelity dating site Ashley Madison after users paid to delete their data.

The Register news site has published a report in which it suggests that a variety of personal data was removed from a database.

However, some information, such as users' GPS co-ordinates, gender and date of birth was retained.

The "Full Delete" option has been available for several years.

It allowed users to pay $19 (£15) to erase "all traces of [their] usage" but Ashley Madison had not issued complete details on how the tool worked.

Following the release of the user database by hackers last week, there were several reports suggesting that the pay-to-delete function was flawed.

Although some data does seem to have been retained, the report by the Register implies that a significant amount of information was removed after payment.

This included:

• Email address, which replaced with "This email address is being protected from spambots. You need JavaScript enabled to view it."
• First and last name
• Street address and postcode
• Home, work and mobile numbers
• Answer to security question

This matches other evidence seen by the BBC.

Previously, Ashley Madison had said that the full delete function would erase photos and messages sent to other users on the site, but that some user profile data could be deleted for free.

Ashley Madison could not be reached for comment.