Does the game punish for killing a defusing teammate?

In low-level play every now and then a teammate kills a defusing friendly player to boost his own score (defusing the bomb grants 4 points) in the competitive mode. Outside of standard penalties for team-killing, is there any punishment specifically for this practice? If there isn't, killing off team players is beneficial for the backstabber and even "advised" on the last round before halftime.

Solution 1:

Though there is no specific penalty for killing a teammate that is defusing in CS:GO there is a system in place that will kick/ban you for dealing too much damage to teammates. When killing a number of teammates a player will be banned from the game. This ban can be temporary or permanent depending on how many times this person has misbehaved.

In short, no there is not a defuse killing specific penalty in the game.

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