Officers went to Gillam Road after a man set fire to something in a garden - a bomb disposal team's assessing the items.
Big Clean Up On Dorset Beaches
Dorset's beaches are being spruced up once again this spring.
The 24th annual Great Dorset Beach Clean takes place today - Sunday 15 April.
Dorset County Council's countryside coastal ranger team will be organising the event, leading teams of volunteers at 25 different locations, from Lyme Regis to Friar's Cliff in Christchurch.
Beachmasters will also be on hand to provide bags, gloves and encouragement.
More than 650 people took part in last year's clean up and organisers are hoping to beat the record of more than 1,000 volunteers, which was set in 2008.
Jenny Penney, coastal ranger at Dorset County Council, said: "It's vital that we keep cleaning beaches to make them safe for people and wildlife as well as maintaining their beauty.
"With the world's attention focused on the Olympic sailing events to Weymouth and Portland this year, it's never been more important to show our stunning coastline at its best."
For information about taking part and where the clean-ups are taking place, visit www.dorsetforyou.com/greatdorsetbeachclean
Tens of thousands of people lined the harbour to welcome HMS Queen Elizabeth to her home port for the first time.
Lanes will be added on Junction 9 slip roads, the Parkway South roundabout and Whiteley Way approach.
A cyclist in his 60s has died after a crash in the New Forest.
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