Scotland's papers: Teacher 'crisis' and third package alert
Labour is targeting major resources on just three constituencies in Scotland, party sources have indicated to The Herald, suggesting Jeremy Corbyn's campaign for power will have to rely on winning seats from the Conservatives in England, says the paper.
The Scotsman quotes internal Scottish government documents which the paper claims have revealed that the "national shortage" of teachers in schools across Scotland could last up to three years.
There are now so many teacher vacancies across Scotland that it will take three years to recruit enough people to fill the gaps in the nation's classrooms, is how the i newspaper covers the story.
Meanwhile, The Courier says that a staffing shortage at a local primary school in Broughty Ferry has led to five different teachers being drafted in to lead a primary one class in the space of a year.
The National leads with the other story dominating Scotland's front pages, the news that the country's politicians have been put on "terror alert" after the SNP and the Scottish police became targets for "hate attacks" by mail.
The Daily Record claims that a letter containing white powder was sent to the SNP's headquarters near Holyrood, while SNP MP John Nicolson's office and SNP-led Angus Council were also targeted.
The issue has prompted police to issue mail handling advice to MPs and candidates campaigning ahead of the general election on 8 June, according to The Scottish Sun.
The Conservatives are on course to recapture their traditional Scottish heartlands after a generation in the wilderness, claims The Times Scotland, which makes the assertion based on the results of the latest YouGov poll.
The Scottish Daily Mail leads with the arrest of a terror suspect, who was detained with a "rucksack full of knives" near Parliament Square in London. The paper says the suspect had been tracked on an "intricate web" of CCTV cameras by police and MI5.
The man was arrested on suspicion of possession of an offensive weapon and on suspicion of the commission, preparation and instigation of terrorism, writes the Scottish Daily Express, which also leads with the story.
Likewise, the Daily Star says the man arrested in Whitehall was reportedly caught following a police tip-off from his own family.