She said she last spoke to Mr Ziriat at about 10:00 GMT on New Year’s Day.
“He sent some photos of the mountains and a couple of himself,” she said.
“He said his phone was about to die but he would write back to me properly soon.”
She said a few hours later, her messages were not being received by Mr Ziriat’s phone.
“His phone had obviously died at that point, or he was out of range,” she said.
Saf Suleyman, friend of the pair, said: “We are going to leave soon and fly to Italy and be on the ground and coordinate search efforts.
“We’re not going to be going up the mountain, we want to be in the town coordinating with the local authorities.”
Ms Dimmock added: “We have an idea of the route they were going. It would be good to check all those huts along that route, because they could literally be sitting in their snowed in, just waiting it out.”
