1. Go to a police department to report the incident.
2. The police can then cancel the card on request and revoke its citizen certificate.
3. Apply for a new identity card.
4. Pay the fee.

• 1 photograph (preferably black and white) (no more than 6 months old)
• a reliable proof of identity

Note:
Finland has introduced new guidelines for passport photos. The aim of these requirements is to standardize passport photos and improve the verification of passport holders identities. To check for the guidelines, click on this link: https://www.poliisi.fi/poliisi/home.nsf/files/Passikuvaohje_07-02-2007_EN/$file/Passikuvaohje_07-02-2007_EN.pdf.

To find a local police station to your area, click on the link below:
Police Contact Information: https://www.poliisi.fi/poliisi/home.nsf/www/contactus

Any Finnish citizen with an identity card.

Identity card - 53

An identity card for foreign citizen is valid for five (5) years.

Please attach documents which can be used by people who would like to follow this procedure.    

Please attach sample completed documents which would help other people who would like to follow this procedure.    

Please explain the processing your application.    

Videos explaining the procedure or to fill the applications. 
Attach videos using the following tag <&video type="website">video ID|width|height<&/video&> from external websites.
Please remove the "&" inside the tags during implementation.
Website = allocine, blip, dailymotion, facebook, gametrailers, googlevideo, html5, metacafe, myspace, revver, 
sevenload, viddler, vimeo, youku, youtube
width = 560, height = 340, Video ID = Can be obtained from the URL of webpage where the video is displayed.
e.g In the following url "http://www.youtube.com/watch?v=Y0US7oR_t3M" Video ID is "Y0US7oR_t3M". 
	

Please provide instructions on obtaining the certificate/documents.
e.g. The state office holds birth records since january 1908.

A list which displays the kind of information which is required to complete the procedure.
e.g.
1. Date of Birth.
2. City or County of Birth.

In cases of lost or stolen identity card, it must always be reported to the police.

When the card has been put on a revocation list, the card holder no longer will be responsible for the use of the certificates.

Note: Remember that an identity card reported missing or stolen can only be used as a travel document after the card holder has presented it to the police and reported it found.

Please explain what are other uses of obtaining this document/certificate.
e.g. Birth Certificate can be used as proof of identity.

Lost/stolen identity cards: https://www.poliisi.fi/poliisi/home.nsf/pages/F0402DB62B826C2FC225783A00463F04?opendocument

More information which might help people.