Police are now appealing for witnesses

Police are now appealing for witnesses. この言い方は「警察は目撃情報を待っています」と言うときの定番表現です。0:59 Police are now appealing for witnesses.

http://www.youtube.com/watch?v=9yZjj3E-tjw  0:54 police have released the footage to appeal for information and witnesses.
http://www.youtube.com/watch?v=o9W_tEySQ1Y  0;43 police have described the attack as barbaric and are appealing for witnesses to come forward.
https://www.youtube.com/watch?v=Jtrx00XaAhg  1+10 police have made a fresh appeal for information to catch the man involved.

参考リンク
http://bridge-english.blogspot.jp/2010/08/blog-post_29.html  乳母車（うばぐるま）を英語でなんと言うか？
http://bridge-english.blogspot.jp/2012/02/blog-post_03.html  控訴（こうそ）するを英語でなんと言うか？
http://bridge-english.blogspot.jp/2016/05/blog-post_30.html  検挙につながる情報を英語でなんと言うか？

練習問題解答
a-4925 appealing for witnesses