A murder investigation has been launched following the death of a 31-year-old woman.

The woman, named locally as Merissa McColm, was found dead in the living room of her Brighton flat at 7.30am on Sunday.

A 43-year-old Brighton man, understood to be Miss McColm’s boyfriend, has been arrested on suspicion of murder and released on bail until November 29.

Yesterday a single bunch of flowers was left outside the entrance to the block of flats where Miss McColm lived in Barclay House, Wellington Road.

An accompanying note said: “Thinking about you. Sorry. With love.”

Tributes poured into Miss McColm's Facebook page, which said she was a former pupil of Lewes Tertiary College and Dorothy Stringer High School.

Ashleigh Cresdee, of Falmer, posted a picture of Miss McColm and said: “I want to let everyone that knew Merissa know that she sadly passed away.

“I don't as yet know exactly what happened. Hopefully she is in a better less crueller place. Sleep well. Love you mate.”

Nikki Guirey said the news was “so shocking” while Sophie Hurley Weller said: “Life is very unfair.”

Barry Roberts said: “You brought a ray of sunshine into my life and I shall never forget you. This is a very sad thing for everyone who loved you and I’m one of them.”

Ria Griffiths said: “Haven’t seen you for a while Reise, but I will hold on to all the memories we had growing up – all 15 years worth. The fun times and the difficult times.”

Neighbours living opposite Miss McColm said she had only lived in the flat for about a year.

One said: “There was a scientific support van outside all day on Sunday and police were milling about.

“Officers knocked on my door and asked what we knew. But I knew nothing.

“I saw them bring a body out and they told me the death was suspicious.”

Detective Inspector Wendy Burton from Surrey and Sussex Major Crime Team said: “Forensic examinations have been carried out at the address.

“Officers are continuing with enquiries and I would appeal to any residents, who have information that could help us with the investigation, no matter how relevant they think it is, to please get in touch.

“Likewise, do not hesitate to speak to an officer if you have any concerns.”

Call Sussex Police on 101 quoting Op Millom or Crimestoppers anonymously on 0800 555111.

If you would like to pay tribute to Miss McColm email anna.roberts@theargus.co.uk.