Gender minister Naomi Shaban's relative allegedly threatened Scottish geologist Campbell Bridges on the day he was killed, a senior police officer told a Mombasa court.
Testifying in the Bridges murder trial, former Wundanyi deputy OCS George Mburugu alleged Daniel Mnene, called and warned he would not allow Bridges to access a road to his mines.
"I received a call from the OCPD that Bridges had reported to him that there were people blocking the road to his mining site and threatened his life. I met with him and took him to the station to write a statement," he said.
Mburugu said he received the alleged warning call by Mnene as he was organising armed escort for Bridges and his team to take them to safety.
He said he mobilised armed police officers following intelligence reports from the ground that a mob had assembled at the disputed ranch.
"I assembled a team of six officers, but realised Bridges had already left. Upon reaching Mwatate shopping centre I received another call from Mnene that Bridges had not heeded his warning and therefore there had been several injuries," he said.
Mburugu said he went to the scene, and found the road had been blocked by trees, adding that there was a lot of blood, but the attackers had fled.
He said investigations showed the attack was coordinated by Alfred Njururuka, a man he knew to be acting as the chairman of the illegal miners.
"Njururuka had been arrested several times for threatening Bridges," he said.
Mburugu said he knew the suspects as he had arrested some of them two weeks before the murder, but had been threatened by the area MP Calist Mwatela over the arrest.
Eight people have been charged with the murder of Bridges, 71.
High court Justice Maureen Odero issued summons for retired pathologist Jane Wasike to testify after the prosecution said she was uncooperative.
Two witnesses will testify on February 20 and 21.
Other suspects charged with the murder are Mohammed Dadi Kokane, Alfred Njururuka, Samuel Mwachala, James Chacha, Osman Abdi and Crispinus Mkunguzi.