Initial reports stated that at least one of the shootings was aimed at a synagogue, though police said there was no clear indication that was the case.
Police plastered notices of the closure order outside the mosque as the authorities promised a tough response against the disseminators of hate messages.
The MK added that it is "a basic condition in a democratic country for the public and MKs to know what they are being asked to authorize in their vote" in the plenum.
The boy had allegedly carried out at least one trial with explosives in preparation for the attack.
The Jerusalem Islamic Waqf said that 1,200 Palestinians total, managed to attend Friday prayers at Al-Aqsa throughout the day.
Authorities have launched an investigation into the incident.
"He said if necessary, he could psychologically analyze himself."
Gunman Brenton Tarrant, a 29-year-old Australian, is scheduled to be sentenced this week after pleading guilty to 51 murders, 40 attempted murders and one charge of committing a terrorist act.
A church was first built at the site in the 4th century, but most of the existing building dates to an 11th century church that was partly rebuilt 200 years later following an earthquake.