Four men were released on bail and were ordered to return to a police station Monday, when they may be charged with assault, a police spokesman said.
The four men were not suspected to be working with anyone.
( z1 suspect :polarity - :ARG1 ( z2 work :ARG0 ( z3 man :quant 4 ) :ARG3 ( z4 anyone ) ) :ARG2 z3 )