The mother of the British teenager found dead three weeks ago on a beach in Goa, expressed her distrust in the police investigation.

Goa’s Tourism Minister, Francisco X. Pacheco, said that police tried to cover up the murder to protect the tourist industry: “This is a clear case of murder and it has gone out of proportion because the police tried to cover it up," Pacheco told Reuters.com.

The 15-year-old Scarlett Keeling was found dead on Anjuna beach last month, partially clothed and with bruises all over her body. Police said she had accidentally drowned, as she had been drugged. Fiona MacKeown, Scarlett’s mother, called for a second autopsy, suggesting that her daughter had been raped and then murdered.

After the second autopsy found that there was not enough water in Keeling’s lungs to indicate drowning, police arrested Sunday a man suspected of having raped Keeling. Samson D’Souza, 29, is a bartender at a beach bar where Scarlett had last been seen. Witnesses said that they had seen Keeling and D’Souza in a compromising position on the beach, before her body was found the next day.

D’Souza was arrested for rape. Whether the sexual act was consensual or not, Keeling was a minor, and Indian law treats sexual intercourse with a minor as rape. The police are investigating whether D’Souza had been involved in murder, too. He told the court in Mapusa that he had spent the entire night with Keeling and left her at 05:00, and that she was still alive when he left her.

However, Keeling's mother said she believed that D’Souza is not the man who killed her daughter, and that police had arrested D'Souza to make it look like they were making progress in the case, CNN reports.

“We've had an awful lot of contact with people that have been in this situation before, and they've warned us to be careful (that) the police will try and find someone immediately to try and put a front on it that they're actually doing something,” Fiona MacKeown told BBC radio on Monday.

“There have been several allegations against the conduct of Anjuna police station officers,” Chief Minister Digambar Kamat told AFP, adding that “We will look into all of them to find out whether there was a delay, mistake or laxity on the part of the officers.”

He accused Scarlett’s mother of negligence.

“The mother should have taken care of the child since she was a minor. She left a minor girl in someone else's custody. Tourists should be more responsible and careful,” he said.

Scarlett Keeling, of Bideford, Devon, was on a six-month holiday in India with her mother, Fiona MacKeown, her mother’s boyfriend and six other children. When Scarlett was found dead, on February 18, her family was traveling to a neighboring state. Scarlett stayed with a tour guide in Anjuna.