Private detectives and investigators use many means to determine the facts in a variety of matters. To carry out investigations, they may use various types of surveillance or searches. To verify facts, such as an individual’s place of employment or income, they may make phone calls or visit a subject’s workplace. In other cases, especially those involving missing persons and background checks, investigators often interview people to gather as much information as possible about an individual. In all cases, private detectives and investigators assist attorneys, businesses, and the public with a variety of legal, financial, and personal problems.
Private Investigators Los Angeles & Agoura Hills, California (CA)

However View Investigations, located in the heart of Los Angeles (Hollywood), goes the extra mile to run a background check, do an asset search, locate a missing person, determine insurance fraud, hire a bodyguard, go undercover, get you the crucial truth that can make or break a case, and so much more.

Singapore

Singapore serves services in various disciplines and expertise, in fields of specialization ranging from Criminal Investigation to Operational Security Planning and Management. It conduct Commercial and Private Investigations, as well as provide Security Consulting and Implementation services, for clients who range from Corporations, Legal Firms, Financial and Insurance Institutions, to Private Individuals including
Types of Private Investigation Assignments

• Surveillance
• Insurance
• Corporate Investigations
• Civil and Domestic Cases
• Skip Tracing
• Cyber Investigations
• Criminal Defense Investigations
• Political and Discovery Assignments

source1: http://www.net-profit-marketing.com/private-investigator-malaysia-1.html
Source2: http://www.private-investigator-detective.net/private-investigator-detective-singapore.html
Source3: http://www.hg.org/private-investigator.asp