Detectives have issued more than 80 additional charges against alleged Melbourne childcare paedophile Joshua Dale Brown.

Warning: This story contains details of alleged child sex offences which may distress some audience members.

Health officials say no children will require further testing as a result of the new charges and no new childcare centres have been identified as being of concern.

However, police say the new charges relate to an additional four victims identified as part of their investigation into the 27-year-old, who was charged with 70 offences earlier in the year.

They say some of the new charges also relate to the initial eight alleged victims identified earlier this year.

The families of the four newly identified alleged victims have been notified.

Mr Brown was this morning charged with 83 offences including six counts of penetrating a child under 12, eight counts of producing child abuse material and 23 counts of using a carriage service to transmit child abuse material.

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