Two teenagers who were stabbed to death at a house party in Milton Keynes have been formally identified by police.

Dom Ansah (the Ghanaian) and Ben Gillham-Rice, who were both 17, were attacked in Archford Croft, Emerson Valley, on Saturday night, reports ITV news.

Thames Valley Police have now formally identified them, and they have also revealed that Dom was stabbed in the back while Ben was knifed in the chest.

Related: Promising Ghanaian footballer, 15, murdered in England

Police officers believe the party was gatecrashed by attackers who were wearing masks.

It's understood that it was a "targeted attack."

A 17-year-old boy and a 23-year-old who were also stabbed were taken to hospital but are now recovering.

A 21-year-old man who was arrested on suspicion of murder is still being questioned and officers now have until Thursday evening to charge or release him.

Photo: The incident happened in Archford Croft on Saturday night. Credit: ITV News Anglia

"We are still seeking others in connection with this dreadful incident, and would again appeal to anybody who has any information that can assist our investigation to make contact with police," Detective Chief Superintendent Ian Hunter said.

"I fully appreciate the concern that this incident has caused in the local community, and would reassure anybody who has information that this will be treated sensitively and we will not tolerate any form of witness intimidation.

"We have officers and staff who can offer you the necessary support.

"If there is anybody that has information, but has not yet contacted us, I ask you to look into your conscience and come forward.

"Two families are grieving the loss of a loved one, and we are resolute in our determination to bring all of the offenders to justice."

The families of Dom and Ben released a joint statement on Wednesday paying tribute to them.

“Our loveable, cheeky son, Dom, was the light of the family’s life and the other half to Holly, his twin sister, who is only half the person she will ever be now that Dom has gone," Dom's family said.

"Dom had big hopes and dreams for his future, which he will now never get to fulfil. There are no words to describe as a family how we will get over this. Dom was loved and cherished by his family and friends and will continue to be missed daily. Our son Ben was a gentle giant with the most caring and loving nature you could have ever asked for," Ben's family added.

“Ben will always be loved by all his family and friends, forever. Ben was a younger brother to Jake, who is absolutely devastated to have had him taken from him. We all as a family are blessed to have had our loving, funny, ambitious Benny Boy in our lives for the 17 years, and we are so devastated that he has gone.”