How did the rebellion of Avidius Cassius end?

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Bronze equestrian statue of Marcus Aurelius with his right arm raised, seated on a horse, at Piazza del Campidoglio in Rome, Italy. — Marcus Aurelius Marcus Aurelius, bronze equestrian statue in the Piazza del Campidoglio, Rome.

The rebellion of Gaius Avidius Cassius against Marcus Aurelius ended abruptly in 175 CE without the need for a direct military confrontation by the emperor.12

After hearing a false report that Marcus Aurelius had died while campaigning on the Danube, Avidius Cassius—who was then the supreme commander of Roman forces in the East—proclaimed himself emperor. Although Marcus Aurelius prepared to march his troops to the East to suppress the uprising, the rebellion concluded when Avidius Cassius was assassinated by his own soldiers. Following the assassination, his head was brought to Marcus Aurelius, who subsequently used the opportunity to conduct a tour of pacification and inspection throughout the eastern provinces.12