AHMEDABAD: An Indian Coast Guard ship from Mumbai is reaching the spot near the International Maritime Boundary Line in the Arabian Sea approximately 365km from Porbandar where a suspected Pakistani fishing boat laden with explosives blew itself in the wee hours of January 1.It will relieve the Indian Coast Guard ship Rajratan from Porbandar that had intercepted the Pakistani boat with four crew members in a midnight operation launched on December 31. Rajratan is expected to return to Porbandar in the evening even as two ships from Okha that helped the former in preventing another attempt by inimical forces to unleash havoc on Indian shores like the 26/11 terror strikes of 2008 in Mumbai, are already back in their base.Meanwhile, Jakhau, Mundra, Vadinar, Okha, Veraval, Pipavav and Porbandar Coast Guard stations of the Indian Coast Guard (North West) remain on high alert as the security agencies continue to look for another suspected boat that too had reportedly sailed with the first one from Keti Bunder, sources said. "All stations are on high alert. We have intensified security in Gulf of Kutch and Gulf of Khambhat," IG Kuldip Singh Sheoran Commander , Coast Guard Region (NW) said.