  Recent imaging observations with the Interface Region Imaging Spectrograp
(IRIS) have revealed prevalent intermittent jets with apparent speeds of
80--250 km~s$^{-1}$ from the network lanes in the solar transition region (TR).
On the other hand, spectroscopic observations of the TR lines have revealed the
frequent presence of highly non-Gaussian line profiles with enhanced emission
at the line wings, often referred as explosive events (EEs). Using simultaneous
imaging and spectroscopic observations from IRIS, we investigate the
relationship between EEs and network jets. We first identify EEs from the
Si~{\sc{iv}}~1393.755 {\AA} line profiles in our observations, then examine
related features in the 1330 {\AA} slit-jaw images. Our analysis suggests that
EEs with double peaks or enhancements in both wings appear to be located at
either the footpoints of network jets, or transient compact brightenings. These
EEs are most likely produced by magnetic reconnection. We also find that EEs
with enhancements only at the blue wing are mainly located on network jets,
away from the footpoints. These EEs clearly result from the superposition of
the high-speed network jets on the TR background. In addition, EEs showing
enhancement only at the red wing of the line are often located around the jet
footpoints, possibly caused by the superposition of reconnection downflows on
the background emission. Moreover, we find some network jets that are not
associated with any detectable EEs. Our analysis suggests that some EEs are
related to the birth or propagation of network jets, and that others are not
connected to network jets.
