They were hiding in a place security officers called a "safe area." It was anything but.

Outside an angry crowd grew, gunfire rang out and a fire blazed.

Thick smoke blinded the three trapped men. The intruders banged on the fortified safety gate of the bunker-like villa.

A security officer handed his cell phone to Ambassador Chris Stevens. Prepare for the mob to blast open the locks of the safety gate, the officer said.

It was a little before 10 at night on September 11, 2012. And time was running out for Stevens.

Vivid new details of the attack on the U.S. Consulate in Benghazi, Libya, were released Tuesday night by a federal committee trying to come to grips with the violence that led to the first murder of a U.S. ambassador since 1988 and the deaths of three other Americans.

The report spoke of grossly inadequate security, an issue that Stevens had complained about well before Sept. 11.

The brief phone call

Instead of blasting their way into the villa, the crowd retreated for some reason. But the fire still blazed.

Stevens used the cell phone to try to alert others about the attack.

Struggling to see, choked by smoke, he dialed.

He may have wanted to tell embassy officials in Tripoli that he and the small security detail at that 13-acre compound were in big trouble.

They were outmanned, outgunned. The militants had doused a large area with diesel fuel and started a hideous fire.

He may have wanted to say that he was trapped in a building they called Villa C with a security officer, and Foreign Service Information Management Officer Sean Smith.

They had to flee to the villa after intruders stormed the walled-in consulate compound armed with machine guns and rocket-propelled grenades.

But in that 9:50 p.m. phone call, Stevens could only tell the U.S. deputy chief of the mission in Tripoli that they were under attack.

The call promptly dropped.

Warning signs

Though fierce and sudden, the attack may not have been surprising for some.

U.S. diplomats who worked in Libya, a country struggling to form a government after overthrowing longtime dictator Moammar Gadhafi, had repeatedly asked for more security.