In Halifax, security was increased at the Nova Scotia legislature and the building was locked down but the daily proceedings continued. Only people with official passes were being let into the building.
Speaker Kevin Murphy said he also asked for two extra police officers at the legislature.
At the New Brunswick legislature in Fredericton, the sergeant-at-arms ordered that legislative assembly buildings be closed to the public.
Dan Bussieres said the decision was made to ensure people feel safe and the buildings will remain closed to the public until he completes a risk assessment and reports to the Speaker on Friday.
The swearing-in of a new lieutenant-governor will proceed as planned Thursday as will Friday's swearing-in of members who were elected in last month's election.
Premier Stephen McNeil said police and military officials didn't indicate there was any threat to the province.
"I am confident that our federal government is taking the appropriate and necessary measures to protect Nova Scotians and all Canadians," McNeil told the legislature.
The events in Ottawa were particularly difficult for two members of the province's Liberal government.
Backbencher Pam Eyking said she found out what was happening via texts from her husband, Liberal MP Mark Eyking.
"He assured me that they were safe and in an undisclosed location and we've continued to text back and forth throughout the day," she said.
Labour Minister Kelly Regan said her husband, Liberal MP Geoff Regan, was at the Ottawa airport when he found out about the shootings and continued on his trip to Europe.
Premier Brian Gallant issued a statement offering his prayers to the victims of the shootings in Ottawa.
"New Brunswick is a safe place to live, but it is important to remain vigilant against threats to our security," he said.