Originally posted by: .Vrish.
No, it was the Shamshaptakas - Krishna's army gift to Duryodhan - who distracted Arjun by challenging him.
Jayadrath's role in this was that after Abhimanyu had penetrated the formation, Jayadrath quickly plugged it again to prevent any further leakage of the enemy into the Kaurava ranks. The boon that Shiva had given him was that on a day, he'd defeat the 4 of the Pandavas, excluding Arjun, but he would still die @ Arjun's hands. That went into effect that day, and whereas normally, Jayadrath was a mediocre warrior, that day, he blocked not only the Pandavas, but everyone else - Satyaki, Drupada, Virata, Dhrishtadyumna, Ghatotkacha and so on.
Abhimanyu was deceptively disarmed by Karna breaking his bow from behind, Drona breaking the reins of his chariot & killing Sumitra, his charioteer. Then they broke his sword, shield and chariot, and there was that famous scene of him defending himself w/ just his chariot wheel. That too was broken.
From this point, most serials get it wrong. Even BRC and RS-SK showed Karna killing him, but that's not what happened. Abhimanyu next picked up his mace, and Dushashan's son attacked him w/ his mace. Now, thisone was a fair 1:1 combat. Both of them fell unconscious after a while. Shrutakarna was the first to recover, whereas Abhimanyu, being exhausted, took more time. Here is where Shrutakarna cheated - instead of waiting for Abhimanyu to get up, he brought his mace down on Abhimanyu's head while he was still unconscious, slaying him.
If anyone ought to have been hunted down for Abhimanyu's killing, it should have been first Drona, and then Shrutakarna.