Police have serious concerns for the welfare of a woman missing from a town in Marlborough and are urgently seeking sightings of her.

Shanelle was last seen at 10am Wednesday in Renwick, wearing dark blue jeans, a black singlet with pink writing and a black cardigan.

Police say Shanelle was last seen at 10am Wednesday in Renwick. Photo / NZ Police

Shanelle is believed to be in a black Nissan Altima that has one pink and one black child seat in the back.

A post circulating on Facebook by Shanelle’s family said her disappearance is out of character.

“Shanelle, if you see this, please know you’re not in trouble. We just want to know that you’re okay. You are so loved, and we’re here for you no matter what.

“Please come home or let someone know you’re safe. We miss you deeply,” the post said.

Shanelle is believed to be in a black Nissan Altima that has one pink and one black child seat in the back. Photo / NZ Police

The police said if you see Shanelle, or have any information that could help, please call them on 111 and quote event number P063399666.