New details have emerged indicating how daring robbers made away with Sh3.5 million from Prime Bank along Mombasa Road on Monday. 

Sources close to the incident indicate that the robbers had told security officers that they wanted to buy a freezer from a shop at the office complex.

However, they stayed at the complex until the bank’s van had arrived to transfer the day’s collection.

While inside the complex, they disarmed two police officers on duty while at the same time ordering guards to vacate their work station. 

In a video circulating online, one of the robbers then took over the role of manning the gate. 

The suspect manning the gate would be seen ushering in and out those who were accessing and leaving the premises.

In the meantime, his counterparts were inside the bank, asking the staff for money.

Five minutes later, the suspect at the gate signaled his counterparts and they all came out, some holding the money stashed in bags.

They would then cross the road and head towards Embakasi.

Following the incident, the bank cashier was injured with witnesses saying that he was hit with a gun.

In a statement, DCI indicated that it had since recovered two firearms that were lost during the robbery.

"The firearms were dropped by a motorbike pillion passenger outside Kiambu Hospital’s gate, shortly before the motorbike disappeared into the darkness," reads an excerpt of the statement.

Initial investigations point to an inside job.