A US teen and her boyfriend detained in connection with the death of her mother on the island of Bali will not be allowed to speak to each other until they make a statement, their Indonesian lawyer said yesterday.

Heather Mack, 19, and Tommy Schaefer, 21, were arrested last week as suspects over the death. They have not been charged. Sheila von Wiese-Mack's battered body was found in a suitcase in a taxi outside the St Regis hotel. The two have hired a US lawyer and have refused to speak to their police-appointed Indonesian lawyer.