DYFED-Powys Police have carried out a positive drug warrant in the Llwynhendy area on Friday (June 22).
The warrant also led to the arrest of one person.
A spokesperson for Dyfed-Powys Police said: “A warrant was executed on June 22 in Bryn Uchaf, Llanelli, under the Misuse of Drugs Act.
“A quantity of herbal cannabis and cash were seized.
“One person was arrested and has been released under investigation while further enquiries are conducted.
“If there are any issues with illegal substances in your area please contact 101 or to remain anonymous report it through crime stoppers.”