We describe a general methodology for the solid phase synthesis of directly linked peptide-oligonucleotide hybrids using a sarcosine-modified controlled pore glass (CPG) support and employing phosphoramidite chemistry for the oligonucleotide synthesis and Fmoc strategy for the peptide assembly. Using this approach a special linker is not needed and the resultant peptide-oligonucleotide hybrid can be further elongated with an oligonucleotide sequence.