KOCHI: While Chief Minister's Addition Private Secretary CM Raveendran did not answer a dozen questions about his property, the Enforcement Directorate (ED) has intensified its effort to find the sources of income. The ED's move is to find out evidence regarding the source of income which helped Raveendran to acquire properties in Benami names. Reports suggest that Raveendran will be arrested for illegal acquisition of property if the ED gets convinced that the properties were acquired by abusing his official position. During the interrogation held at the ED office in Kochi last day, the enforcement officials came to know that Raveendran was hiding something after he evaded answering many questions regarding the property.