The basis for the arrests of former Umno leader Khairuddin Abu Hassan and his lawyer Matthias Chang under the Security Offences (Special Measures) Act (Sosma) is that the prime minister is "insecure", said PKR vice-president Tian Chua.

He was responding to Communication and Multimedia Minister Salleh Said Keruak's statement yesterday that the government has always a basis for any arrest made under Sosma.