Four people have been charged following the seizure of about $90,000 worth of drugs in Launceston.

Members of the Northern Drug Investigation and Launceston CIB executed a search warrant at a Mayfield address on Tuesday 4 December.

During the search, police located and seized about 90 grams of methylamphetamine, $12,000 cash, property and five firearms.

As a result of this search, police have charged a 28 year old Mayfield man and a 19 year old Turners Marsh woman with trafficking methylamphetamine.

A 35 year old Mayfield woman has been charged with selling methylamphetamine and a 33 year old Victorian man was charged with dealing in the proceeds of crime.

Further charges are expected to be laid in relation to the seized firearms.

All four will appear in the Launceston Magistrates Court on Wednesday 23 January 2019.

The estimated street value of the seized drugs is in excess of $90,000.

Police would like to thank the public for their assistance and urge anyone with information about serious drug offences be provided anonymously by calling Crime Stoppers on 1800 333 000, online at crimestopperstas.com.au or directly with the Northern Drug Investigation Services on 6777 3750.