Two "suspected devices'' were also discovered at the house in Kirkton Avenue, Blantyre, South Lanarkshire, on Wednesday.
Pupils Given Chance To Sit At Obama Dinner
Entrepreneur Sir Tom Hunter has given Scottish school pupils the chance to compete for a table at a dinner attended by former US president Barack Obama.
The Hunter Foundation is donating a table of 10 to a secondary school group, but they must first write an essay on how they would change Scotland.
The businessman laid down a challenge to Scottish school pupils which asks them to write an essay on what their school would do if it ran the country.
In return they could win a table at the former president's lecture at Edinburgh International Conference Centre on May 26.
In the invitation, Sir Tom says: "If you ruled the world...Oh okay then, Scotland... what would you change? All you have to do is write an essay that summarises what your school would do if you ran Scotland. What would you change, why would you change it and how?''
It adds: "Think you could run the country? Tell us how you'd do it and your school could win a table at a dinner with Barack Obama.
"The 44th president of the United States will address philanthropy and business leaders at a dinner at the EICC.
"And this is your school's chance to be there at the event. The Hunter Foundation in partnership with Skills Development Scotland and Founders4Schools is offering one table of 10 for a secondary school to attend the dinner.''
Pupils are asked to write an essay with a maximum of two pages where they can be as creative as they like.
They must also say how they will select the nine others on their table if they win.
The terms and conditions also state permission must be given from pupils' schools to enter.
They add: "At least one member of the winning group must be a teacher or adult. The prize is only for President Obama's lecture and does not include post-lecture entertainment.''
Danny Logue, director of operations at Skills Development Scotland, said: "SDS careers advisers across Scotland work with pupils to support them to make the most of their strengths, potential and future career ambitions.
"This is a great opportunity for schools and for young people to show their creativity and innovation.''
Police Scotland said the officer had approached an Audi A4 to speak to the occupants when it was allegedly driven at him.
Audit Scotland's annual review of the sector found there were 220,680 students by headcount in 2015/16, the smallest number since 2006/07.
Fondly known as The Big Yin, he will be recognised for his contribution to society at a university graduation ceremony in the Barony Hall in Glasgow on Thursday.
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