Glenorchy CIB is investigating an allegation of Prohibited Behaviour in Montrose on Monday, in which a man exposed himself.

Detectives are following a particular line of enquiry.

The man was described as:

• Aged in his 50s;
• Sporting a grey goatee beard with short grey hair;
• Wearing a blue/brown horizontal striped t-shirt and grey shorts; and
• Riding a grey coloured mountain bike.

Anyone with information should contact Glenorchy CIB on 131 444 or Crime Stoppers on 1800 333 000 or at crimestopperstas.com.au