In this task, given a sentence in the English language, your task is to convert it into the Japanese language.
One example: Test subjects will be administered either a placebo or PA-457 that will be taken in combination with the medication they already take.
Solution is here: 被験者は、彼らがすでに服用している薬剤と一緒に偽薬またはPA-457を与えられる。
Explanation: The above sentence is correctly translated from English to Japanese.

Now, solve this: "As a precaution, a cordon has been put in place around the scene," said another police spokesperson.
Solution:
「念のため、現場周辺には警戒線が張られた」と警察の別の広報官が言った。