The CBI is expected to summon former Telecom Minister Dayanidhi Maran again in the illegal telephone exchange scandal, as he was “evasive” to the past two times questioning. Highly-placed CBI sources said Maran, who held Telecom and IT portfolio in UPA-I from 2004 to 2007, was “evasive on many points” during his 22-hour questioning over three days, last week.