Three Malaysian nationals were among six people charged with various drug offences following police raids across Melbourne on Tuesday, which netted cannabis worth A$3.7 million.

More than 1,500 cannabis plants were seized from houses in simultaneous morning raids in the suburbs of Dandenong, Springvale, Carrum Downs, Clarinda and Mulgrave, a police media statement said.

The Malaysians are aged 42, 38, and 26 and are in immigration detention.

Police have charged the 26-year-old man and the 42-year-old man, both from Keysborough, with cultivating a commercial quantity of cannabis and trafficking a commercial quantity of cannabis.

The 38-year-old man from Springvale was also being charged with cultivating and trafficking cannabis.

One of the Malaysians has contacted the Malaysian consul-general in Melbourne, Dr Mohd Rameez Yahaya, soon after his arrest for consulate assistance.

A 72-year-old man, from Noble Park, was also charged with cultivating and trafficking a large commercial quantity of cannabis and 10 counts of theft.

Two women, aged 42 and 40, also faced similar charges.

A significant amount of products and equipment believed to be used to cultivate cannabis plants had been seized.

- Bernama