  Gravitational wave (GW) echoes, if they exist, would be a probe to the
near-horizon physics of black hole. In this brief report, we performed the
Monte Carlo Markov Chain analysis to search for echo signal in all GWTC-1 and
O3 GW events. We focus on the Insprial-Merger-Ringdown-Echo (IMRE) waveform,
and apply the Bayesian model selection to compare the IMRE result with IMR's
(no echo). We find no statistically significant ($<1\sigma$ combined) evidence
for the GW echoes and only individual GW events with the echoes at $1\sim
2\sigma$ significance.
