  In this paper, We report the interplanetary effects of a fast coronal mass
ejection (CME) associated with the intense X2.7 flare that occurred on 05 May
2015. The near-Sun signatures of the CME at low-coronal heights $<$2
{R$_{\odot}$} are obtained from the EUV images at 171 {\AA} and metric radio
observations. The intensity and duration of the CME-driven radio bursts in the
near-Sun and interplanetary medium indicate this CME event to be an energetic
one. The interplanetary scintillation data, along with the low-frequency radio
spectrum, played a crucial role in understanding the radial evolution of the
speed and expansion of the CME in the inner heliosphere as well as its
interaction with a preceding slow CME. The estimation of the speed of the CME
at several points along the Sun to 1 AU shows shows that i) the CME went
through a rapid acceleration as well as expansion up to a height of $\approx$6
{R$_{\odot}$}, and ii) the CME continued to propagate at speed $\geq$800
kms$^{-1}$ between the Sun and 1 AU. These results show that the CME likely
overcame the drag exerted by the ambient/background solar-wind with the support
of its internal magnetic energy. When the CME interacted with a slow preceding
CME, the turbulence level associated with the CME-driven disturbance increased
significantly.
