Suspicious packages from Asia were delivered to four more Nova Scotia courthouses Tuesday, with police and justice officials confirming there is a connection to similar incidents in Manitoba last month.

The Kentville and Bridgewater courthouses along with the Nova Scotia Supreme Court building in Truro and the Law Courts building in Halifax all received the envelopes Tuesday.

"This has been a growing concern across the country," Kentville police Const. Kevin Pick told CBC News.

This follows a similar incident on Monday when four front counter workers at the Amherst courthouse went to hospital complaining of nausea, dizziness and burning in the throat after an envelope sent from Hong Kong arrived. All employees were released from hospital.

On April 8, packages were received by Manitoba court buildings in Winnipeg, Brandon, Morden and Minnedosa. RCMP tested the contents and have said they contained no dangerous chemicals, however police have not revealed what was inside.

A Halifax Regional Police officer wears a mask as he begins to investigate a suspicious package at the Law Courts in Halifax. (Jennifer Henderson/CBC) The Law Courts on Upper Water Street was evacuated for a short time Tuesday afternoon. Halifax police officers with gas masks carried out a plastic container with an orange item inside.

Justice Minister Lena Diab says alerts have been sent out to courts and other government departments asking them to be vigilant and to make sure any suspicious package is handled properly.

The justice department says there are no reported health problems related to Tuesday's envelopes.

In Amherst, Police Chief Ian Naylor says the envelope was sent from Hong Kong and has been turned over to the RCMP chemical, biological, radiological, nuclear (CBRN) unit for further analysis.

Naylor says the situation is similar to the one in Manitoba last month where several courthouses received suspicious packages from China.

Following those incidents, a bulletin was sent to police agencies across the country warning other packages could be sent elsewhere, Naylor said. It meant the employee in Amherst knew immediately the nature of the package.

Canada Post letter carrier Terry Piper says he delivered two brown legal-size envelopes to courthouses on Tuesday he thought were suspicious.

Canada Post had told employees to watch for packages from a specific country. He said they felt to him as if they contained papers.

'We can never say never'

In Kentville, police say a sheriff met a letter carrier around 10 a.m. this morning.

"It is the same MO as all the other packages that have been received in Amherst, Bridgewater and now here in Kentville," Pick says. "Addressed to the same type of individual within the courthouse with a return address in Hong Kong."

Pick says the package was immediately placed on the ground outside and never entered the building.

"Great due diligence on his part," said Pick. "I've been very, very, very — overwhelmingly — reassured by the RCMP that at this point in time there is nothing to be concerned of. But again we all need to due diligence because we can never say never."