Police were not involved in extorting money from the relatives of an alleged drug dealer who died in police custody in Songkhla province early last month, the Crime Suppression Division (CSD) said yesterday. Ten police were suspected of demanding 1 million baht from the man's relatives and were transferred pending a probe. The CSD probe team said yesterday their inquiry had cleared the 10 men. Police in fact denied demanding a bribe and suspect it was someone impersonating police, the probe team said.