Looking up BeanManager from JNDI doesn't work in ServletRequestListener.requestInitialized()

@WebListener
@WebFilter(urlPatterns = "/*")
public class TestListener implements ServletRequestListener, Filter {

    @Override
    public void init(FilterConfig config) throws ServletException {
        lookupBeanManager("Filter.init()");
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
            ServletException {

        lookupBeanManager("filter.doFilter()");
        chain.doFilter(request, response);
    }

    @Override
    public void destroy() {
    }

    @Override
    public void requestInitialized(ServletRequestEvent event) {
        lookupBeanManager("ServletRequestListener.requestInitialized()");
    }

    @Override
    public void requestDestroyed(ServletRequestEvent arg0) {
    }

    private void lookupBeanManager(String calledFrom) {

        try {

            InitialContext ic = new InitialContext();
            Object beanManager = ic.lookup("java:comp/BeanManager");

            System.out.println(calledFrom + ": Lookup SUCCESS");

        } catch (NamingException e) {
            System.out.println(calledFrom + ": Lookup FAILED");
        }

    }

}