Pacheco, a Goa Vikas Party legislator, has been convicted for slapping a junior engineer in electricity department and is currently jailed at Sada Sub prison.
Arlekar said there is no ban on Pacheco participating in the session as he is a member of the Legislative Assembly.
"He can ask questions, move motion and be a part of session like any other MLA," the Speaker said.
The Speaker said that after getting permission from court he can be a part of the proceedings.
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The upcoming monsoon session of Legislative Assembly is scheduled in the last week of July.
"The Inspector General of Prison has already informed the Legislature department that Pacheco is currently in the jail," said Legislative Secretary N B Subhedar.
He said a bulletin has also been issued to all the MLAs informing about Pacheco's jail term.
Subhedar said the seating of Pacheco will have to be changed as he will have to be shifted from ministers' row to that of MLAs.