at the same instant

See: concurrent
References in classic literature ?
His tail shot suddenly erect and at the same instant the wary ape-man, knowing all too well what the signal portended, grasped the remainder of the deer's hind quarter between his teeth and leaped into a nearby tree as Numa charged him with all the speed and a sufficient semblance of the weight of an express train.
At the same instant Dian caught my arm and pointed toward the village.
At the same instant he saw that others of the banths were racing toward them with the quite evident intention of following their leader to the ship's deck.
At the same instant Muda Saffir with fifty of his head-hunting Dyaks emerged from the jungle east of the camp, bent on discovering the whereabouts of the girl the Malay sought and bearing her away to his savage court far within the jungle fastness of his Bornean principality.
The boy turned and fled, and at the same instant the lioness charged.
At the same instant a pair of giant arms encircled me from behind and lifted me entirely off my feet.
At the same instant his friend grabbed it from the other side.
Almost at the same instant he heard a crashing sound in the trees - a sound that died without an echo - and all was still.
Naked and unarmed, as I was, my end would have been both speedy and horrible at the hands of these cruel creatures had I had time to put my resolve into execution, but at the moment of the shriek each member of the herd turned in the direction from which the sound seemed to come, and at the same instant every particular snake-like hair upon their heads rose stiffly perpendicular as if each had been a sentient organism looking or listening for the source or meaning of the wail.
With a sudden crash it fell splintering in, and at the same instant Abdul felt himself lifted like a feather onto the roof above.
I was conscious at the same instant of the twittering of birds, of someone coughing in the yard below, and of a background of movement in the landscape.
They then at the same instant perceived a large lantern carried on a pole appear on the deck, defining the forms of shadows behind it.