Media lawyer Ambi Sitham said today that the pair exchanged pointed remarks at a birthday party. She said Morgan told Brooks, "'I already know what your splash is, or your cover is, because I've been listening to messages.'"
Sitham said Morgan also joked with her about Brooks, "'Careful she'll tap your phone.'"
Brooks was then editor of Rupert Murdoch's Sun newspaper and Morgan edited the Daily Mirror. Brooks, former News of the World editor Andy Coulson and six others are on trial on hacking-related charges, which they deny.