Police have arrested three men in an investigation into a Tauranga-based group allegedly trying to catch people attempting to make contact with minors online.

Police said in a statement today a man aged 18 and two 19-year-olds face serious assault charges and charges relating to causing harm by posting digital communications.

One was arrested in Auckland and was due to appear in the Counties Manukau District Court today with the other two accused due to appear in the Tauranga District Court tomorrow.

The investigation continues and police want to hear from anyone targeted by the group or who have knowledge of the group.

Information could be provided by calling 105, or making an online report via the 105 website and referencing case number 240807/4750.

Information can also be provided anonymously via Crimestoppers on 0800 555 111