A man charged with being in possession of ivory worth Sh44 million made 78 telephone calls to his co-accused within eight days before his arrest.
Data from mobile phone service provider Safaricom shows businessman Feisal Mohammed Ali would call Mr Abdul Halim Sadiq even at 2am between May 29, and June 5, 2014.
Within that period, Mr Sadiq called back 12 times only.
Inspector David Kiboi from Directorate of Criminal Investigations told Mombasa Principal Magistrate Diana Mochache that Mr Fail communicated Mr Sadiq for a long time before the trophies were recovered.
The data produced in court shows Mr Ali was in constant communication with his co-accused and sometimes, the calls ran throughout the night.
However, the nature of their communication and the business they were transacting was not disclosed.
Mr Kiboi said after analysing the call data records, it was established that Mr Ali was at the centre of the communication.
"On June 4, 2014, he called Mr Sadiq at 11pm and the call lasted 187 seconds. On the same day at 1:36am, Mr Feisal who the data indicate he was at Congo Mansion within Mombasa called Mr Sadiq again," he said.
The data shows Mr Feisal never slept on that night as he was in constant communication with Mr Sadiq and other individuals also charged with them, Mr Ghalib Sadiq Kara and Mr Juma Wekesa until morning and the phone calls continued for the rest of the following day.
Mr Ali and the co-accused are said to have been found in possession of 2,152 kilograms of ivory on June 5 in Tudor Estate, Mombasa.
Other suspects are Mr Praverz Noor Mohamed and Mr Abdulmajeed Ibrahim.
The case was adjourned as defence lawyers requested for time to analyse the call data.